Specialty Knee

The knee is the largest joint in the body, made up of the lower end of the thighbone (femur), the upper end of the shinbone (tibia) and the knee cap (patella). The knee also includes four major ligaments that connect the bones, control motion, stabilize the joint and restrict abnormal movement. The knee cartilage allows the bones in the knee to glide smoothly over each other.

The physicians at ONS are available to assist in diagnosing and treating your knee condition. We invite you to schedule a consultation with a knee specialist.

Learn more about some of the common knee conditions treated by our specialists by clicking the link below:

ACL Injuries
Arthritis of the Knee
Baker’s Cyst
Knee – High Tibial Osteotomy
Knee – Loose Body Removal
Knee – Patella Pain
Knee Arthroscopy
Knee Articular Cartilage Conditions
Knee Cartilage Transplant – Allograft
Knee Cartilage Transplant – Autograft
Knee Replacement Surgery
MCL Injuries
Medial Patellofemoral Ligament (MPFL) Reconstruction
Meniscal Tear
Osgood Schlatter’s Disease
Partial Knee Replacement
PCL Injuries
Revision Knee Replacement
Torn Meniscus Repair
Jonathan Berliner, MD joint replacement specialist

Jonathan L. Berliner, MD

Jonathan L. Berliner, MD, director of the ONS Outpatient Joint Replacement Center, is a board certified orthopaedic surgeon and fellowship-trained specialist in hip and knee replacement. His expertise includes muscle sparing anterior hip replacement, minimally invasive total knee and partial knee replacement, complex revision total hip and total knee replacement, computer-assisted surgery, and trauma of the lower extremity.

Dr. Berliner earned his medical degree from New York University School of Medicine, graduating with Alpha Omega Alpha (AOA) honors. He completed his residency in orthopaedic surgery at the University of California, San Francisco (UCSF), followed by a fellowship in hip and knee replacement at Hospital for Special Surgery in New York City.

Dr. Berliner is a recipient of the John Charnley Award, a national award presented annually by the Hip Society for the best innovative clinical research related to hip replacement.  He has been named a 2020 Rising Star – 40 Under 40 by the Business Council of Westchester. He has served as a visiting surgeon in Haiti and Nicaragua as a visiting surgeon and provides other volunteer medical services abroad.

Dr. Berliner’s primary focus is to develop an individualized treatment plan to help patients return to their desired activity levels and regain a fulfilling quality of life.

Please click here to request an appointment online or call 203-869-1145.

Testimonials

Dr. Berliner was great with our son! He was kind, professional, and put our minds at ease. We are so grateful he was the doctor that came to fix our son’s wrist! I would highly recommend Dr. Berliner!  (5 Star Review on Healthgrades)

Dr. Berliner did an anterior hip replacement on me in January and I could not be happier with the results. He is a complete professional, treating me with the upmost respect and care. He is patient, kind, competent and totally without ego. I highly recommend him. (5 Star Review on Healthgrades by J.F. of Darien, CT) September 13, 2019

I had total knee replacement in both knees by Dr. Berliner. He is an excellent surgeon and was great at explaining and guiding me through what to expect. He welcomed my questions and understood my concerns. His office staff was amazing in every situation…….Best decision I ever made. (5 Star Review on Google from A.G.)

Dr. Berliner at ONS is a superb physician and I can not recommend him highly enough. Knowledgeable and compassionate with a sense of humor. I had two anterior hip replacements in 10 months and couldn’t be happier. Run, if you can  to Dr. Berliner. (Patient comments on ONS Facebook)

With two hip replacements in 10 months I cannot say enough about Dr. Berliner and ONS. Professional, caring and superb quality of care. Would recommend Dr. Berliner and ONS to anyone with orthopedic concerns. (5 Star Review on Google from L.G.)

I came across Dr. Berliner, who has a special training to perform anterior hip replacement surgery. This surgery  shortens recovery time and it is also less painful. When I met Dr. Berliner, I knew I was in great hands. He explained everything to me in great detail and was very patient with me. I felt so comfortable that I scheduled my surgery before leaving the office. My surgery went smoothly. I was home next day. I highly recommend him! He is an exceptional orthopedic surgeon! Thank you very much. (5 Star Review on Healthgrades from Y.)

It has been 8 weeks since my hip replacement with Dr. Berliner. He gave me my pre-pain active life back. I am completely pain free and have resumed my sporting activities. I walk at least a mile per day, resumed Pilates and even started to play a little golf. Everyone is amazed with my recovery ahead of schedule. I consider Dr. Berliner an excellent and compassionate surgeon. His communication was clear and informative. His confidence helped me make the decision to undergo the procedure. He made the process less scary than I thought it would be. I am very thankful to Dr. Berliner and the staff at ONS and will gladly recommend him to others and would entrust him with another procedure if needed. (Review on ONS Facebook by A.M.)

Dr. Jonathan Berliner did anterior double hip replacement on my husband and we are both so impressed! His compassion and professionalism is amazing! We are both so grateful for his work and expertise! Thank you Dr Berliner! (5 Star Review on Facebook from D.S.B)

Dr. Berliner is a very nice man who answered all of my many questions prior to and after my surgery. It has been 4 weeks since my anterior full hip replacement and I am doing very well. I was pleased with his bedside manor, he had no arrogance and I never felt rushed at an appointment. Most of all, with Dr. Berliner’s muscle sparing anterior technique, I was able to do a full squat with no pain only 8 days after my surgery and I was twirling my cane like Charlie Chaplin on my daily walk! (5 Star Review on Healthgrades from L. in New Canaan, CT)

I was having severe left hip pain and went to Dr. Berliner for a second opinion. I ended up having him do my anterior hip replacement this past January, and I am so pleased. He is professional and compassionate, and an excellent surgeon. I was a nervous wreck since I never had surgery before, nor had I ever even been in a hospital in my 67 years of living! He is wonderful, bottom line. I need a knee replaced too, and he will be doing that when the time comes! (5 Star review on Healthgrades from P.P. in Norwalk)

At 34, I was young to need a hip replacement, but needed one regardless. I am very grateful to have found Dr. Berliner. He handled a complex case swiftly and adeptly, with a calm confidence unparalleled in other surgeons.

The post-operative pain was negligible compared to the amount of pain I was in pre-op. Within a week, I was walking with a cane, something I hadn’t been able to do during the 5 months prior.  Evident of his people skills, he even handled my post-operative anxiety about complications occurring like a pro, alleviating any concerns.

I sent the post-op images to a relative overseas who is also an orthopedic surgeon. He said Dr. Berliner did “brilliant work.” – I can only agree.  Thank you. (L.D.)

Dr. Berliner is absolutely the best! I did much research before having my total anterior hip replacement and because he is young and starting his practice, I could not find much information on him. I took a chance because I had a good feeling and he did an outstanding job with my surgery. He was very present and available and didn’t have the doctor ego where he wouldn’t answer questions etc. etc. He was nothing short of incredible. I’m so thankful to him and all the team at ONS. (5 Star Review on Healthgrades by M.F. of Danbury, CT)

When I first came into your office, I was nine months post-operative from a  total knee replacement from a doctor in Florida. He did a horrible job. I was +70/65 bend. Just horrible. I met Dr. Berliner after he came highly recommended. He changed my life on 12/15/17. He did a total revision on my right knee. I am now 8 days post operative and bending 80 already and -5. I am so blessed for him.  It was a very tough surgery and he did an amazing job.  (J.B., 5 Star Reveiw on ONS Facebook page)

View All Testimonials

WEBINARS

Is Outpatient Joint Replacement Right for You?

Joint Replacement Symposium

Modern Trends in Joint Replacement, 60 mins.

Trends in Joint Replacement 30 mins.

VIDEOS

Watch Dr. Berliner’s presentation on Anterior Total Hip Replacement and Rapid Recovery:

Dr. Berliner discusses Anterior Hip Replacement with Dr. Lou Bisogni on White Plains Public Television:

AFFILIATIONS

Alpha Omega Alpha Honor Society
American Academy of Orthopaedic Surgeons
American Association of Hip and Knee Surgeons
American Board of Orthopaedic Surgery, Board Certified
California Orthopaedic Association

AWARDS

2020 Rising Star – 40 Under 40, Business Council of Westchester

The John Charnley Award, The Hip Society 2015
for best innovative research encompassing important advances in the management of hip disorders.

TEAM COVERAGE EXPERIENCE

Iona Prep Football Team Physician, New Rochelle, NY,  2018 season
San Francisco Marathon
University of California, San Francisco PlaySafe Marathon
San Francisco Rock’ n Roll Half Marathon

MEDICAL VOLUNTEER

Hospital Lenin Fonseca,  Nicaragua
CRUDEM Foundation, Haiti
New York City Free Clinic, New York

PEER-REVIEWED PUBLICATIONS

Berliner JL, Esposito CI, Miller TT, Padgett DE, Mayman DJ, Jerabek SA. What preoperative factors predict postoperative sitting pelvic position one year following total hip arthroplasty? Bone Joint J. 2018 Oct;100-B(10):1289-1296. PMID: 30295534

Rueckl K, Sculco PK, Berliner JL, Cross MB, Koch C, Boettner F. Fracture risk of tapered modular revision stems: a failure analysis. Arthroplast Today. 2017 Dec 21;4(3):300-305. PMID: 30186909

Berliner JL, Ortiz PA, Lee YY, Miller TT, Westrich GH. Venous Hemodynamics After Total Hip Arthroplasty: A Comparison Between Portable vs Stationary Pneumatic Compression Devices and the Effect of Body Position. J Arthroplasty. 2018 Jan;33(1):162-166. PMID 28927565

Wong SE, Zhang AL, Berliner JL, Ma CB, Feeley BT. Preoperative patient-reported scores can predict postoperative outcomes after shoulder arthroplasty. J Shoulder Elbow Surg. 2016 Jun;25(6):913-9. PMID

27039669

Berliner JL, Brodke DJ, Chan V, SooHoo NF, Bozic KJ. Can Preoperative Patient-reported Outcome Measures Be Used to Predict Meaningful Improvement in Function After TKA? Clin Orthop Relat Res. 2016 Mar 8. PMID 26956248

Berliner JL, Brodke DJ, Chan V, SooHoo NF, Bozic KJ. John Charnley Award: Preoperative Patient- Reported Outcome Measures Predict Clinically Meaningful Improvement in Function after THA. Clin Orthop Relat Res. 2016 Feb;474(2):321-9. doi: 10.1007/s11999-015-4350-6. PMID 26201420

Berliner JL, Regalado-Magdos A, Ma CB, Feeley BT. Biomechanics of Reverse Total Shoulder Arthroplasty. J Shoulder Elbow Surg. 2015 Jan;24(1):150-160. doi: 10.1016/j.jse.2014.08.003. PMID  25441574

Elliott RE, Bollo RJ, Berliner JL, Silverberg A, Carlson C, Geller EB, Barr WB, Devinsky O, Doyle WK. Anterior temporal lobectomy with amygdalohippocampectomy for mesial temporal sclerosis: predictors of long-term seizure control. Neurosurg. 2013 Aug;119(2):261-72. doi: 10.3171/2013.4.JNS121829. PMID 23706057

Berliner JL, Verma K, Lonner BS, Penn PU, Bharucha NJ. Discriminative validity of the Scoliosis Research Society 22 questionnaire among five curve-severity subgroups of adolescents with idiopathic scoliosis. Spine J. 2013 Feb;13(2):127-33. doi: 10.1016/j.spinee.2012.10.025. PMID 23218828

Bollo RJ, Berliner JL, Fischer I, Miles DK, Thiele EA, Zagzag D, Weiner HL. Extraventricular subependymal giant cell tumor in a child with tuberous sclerosis complex. Neurosurg Pediatr. 2009 Jul;4(1):85-90. doi: 10.3171/2009.3.PEDS08225. PMID 19569916

ABSTRACTS/PAPER PRESENTATIONS

Berliner JL, Esposito CI, Miller TT, Padgett DE, Mayman DJ, Jerabek SA. Hip flexion increases and spine flexion decreases from standing to sitting position 1 year after patients undergo total hip arthroplasty. Paper Presentation at the American Academy of Orthopaedic Surgeons (AAOS) Annual Meeting, New Orleans LA, 3/2018

Berliner JL, Esposito CI, Miller TT, Padgett DE, Mayman DJ, Jerabek SA. Hip flexion increases and spine flexion decreases from standing to sitting position 1 year after patients undergo total hip arthroplasty. Abstract presented at the American Academy of Hip and Knee Surgeons (AAHKS) Annual Meeting, Dallas TX, 11/2017

Berliner JL, Brodke D, Chan V, Bozic KJ. Patient Reported Outcome Measures as a Tool for Surgical Appropriateness in Total Hip Replacement. Paper presentation presented at the American Academy of Orthopaedic Surgeons (AAOS) Annual Meeting, Las Vegas NV, 3/2015

Berliner JL, Zhang AL, Lansdown DA, Ma CB, Feeley BT. Prevalence Of Rotator Cuff Atrophy And Fatty Infiltration In Patients With Glenohumeral Osteoarthritis. Abstract to be presented at the American Academy of Orthopaedic Surgeons (AAOS) Annual Meeting, Las Vegas NV, 3/2015.

Berliner JL, Brodke D, Chan V, Bozic KJ. Patient Reported Outcome Measures as a Tool for Surgical Appropriateness in Total Knee Replacement. Abstract to be presented at the 2014 American Association of Hip and Knee Surgeons Annual Meeting, Houston TX, 11/2014

Verma K, Berliner JL, Lonner BS Does the SRS-22 Correlate with Curve Severity in Adolescent Idiopathic Scoliosis? An Age and Gender Matched Comparison. Poster presented at the 17th International Meeting on Advanced Spine Techniques (IMAST), 7/2010

BOOK CHAPTERS

Berliner JL, Haas SB – Extra-articular tibial deformity: Correction with the Implant – Complex Cases in Total Knee Arthroplasty: A Compendium of Current Techniques, 2018

THA: Posterior Approach – AAOS Advanced Reconstruction Hip 2. Collaborating with Dr. Thomas Vail 2016

Revision THA: Component Removal – AAOS Advanced Reconstruction Hip 2. Collaborating with Dr. Kevin Bozic, 2016

 

Reviewed 2019

Kevin Choo, MD

Kevin J. Choo, MD

Kevin J. Choo, MD, is an orthopedic surgeon who specializes in primary hip and knee replacement for the treatment of degenerative osteoarthritis, inflammatory arthritis, avascular necrosis, hip dysplasia, and post-traumatic arthrosis.  He is fellowship-trained in direct anterior hip replacement, use of computer- and robotic-assisted technology, and partial knee replacement. His clinical interest also includes revision hip and knee surgery for the treatment of failed joint replacement due to infection, loosening, or recurrent dislocation.

Dr. Choo earned his medical degree from the University of Chicago and completed his internship and residency at UCSF (University of California- San Francisco). He received  fellowship training in Adult Reconstruction and Joint Replacement at the Rothman Institute in Philadelphia, PA.  Dr. Choo has presented and published on such topics as the biology of bone healing, the reduction of opioid use after orthopedic surgery, periprosthetic joint infection management, and partial joint replacement. Dr. Choo was named an Emerging Leader by the American Orthopaedic Association (AOA). He is a reviewer for the Journal of the American Association of Orthopaedic Surgeons (JAAOS) and the Journal of Orthopaedic Trauma (JOT)

Please click here to schedule an appointment online or call (203) 869-1145

Testimonials

From realizing it was time for a knee replacement to researching a knee replacement doctor, a friend spoke to me about Dr. Choo from ONS. When I saw that he took my insurance it was a go. I paid close attention to the team Dr. Choo has. They are so informative and caring. I had such help from them setting into place what help I would need at home. Dr. Choo was so confident in letting me know what a better quality of life I would have. It has been 5 months since the surgery. Dr. Choo gave me the confidence to endure the icing of the knee and the exercising is so important rest and fluids. To stay focused on the healing process. Thank you Dr. Choo and his team. God bless you all. (5 Star Review on Healthgrades from DS)

Knowledgeable, professional and caring. Thoroughly explained my condition to me. (5 Star Review on Healthgrades)

The office seemed very clean and well run, everyone was nice, Dr Choo explained everything clearly, was friendly, and I left feeling confident in what needed to be done. (5 Star Review on Healthgrades)

Dr Choo employs the anterior method of performing hip replacements and, two weeks after my procedure, I am very pleased indeed to give him the highest possible rating. It’s relevant to note that I am 86 years old. My experience has been remarkable. The very same day of my operation, the nurses and therapist at Greenwich Hospital got me on my feet with a walker and I was able to walk down a corridor. Courtesy of Dr Choo’s skill, plus no doubt the effect of blockers, recommended medications and occasional ice – packs, my recovery has been almost pain-free. Dr Choo exhibits a highly confident and pleasant and professional manner – entirely justified in my experience. (5 Star Review on Google from DM)
I, too, am two weeks into a full hip replacement performed by the amazing Dr. Choo who was absolutely perfect!! His explanations, patience, humility, respect, and most importantly his immense skill and knowledge in this area were exactly what I needed to get through this hip replacement, following the multiple spinal fusions I’ve also had at ONS. He collaborated with my spine surgeon early on and set a course that was perfect in planning and execution. I couldn’t be happier or recommend Dr. Choo more highly — he is fantastic in every way. (5 Star Review on Healthgrades from P.K.)
I am two weeks into a full hip replacement. Dr. Choo could not have been better. He explained all procedures clearly and thoroughly, used a front entry incision, and a spinal and a sedative instead of full anesthesia so I recovered quickly after the surgery. Dr. Choo invited questions on my part and listened and answered all of them in terms I could understand. After the surgery he checked on me three times in the hospital and called me at home the day after to check on me. Everybody associated with ONS was helpful and caring. All appointments were made quickly and were not rushed. I am not medically knowledgeable – but I did due diligence looking into the details of full hip replacement. Dr. Choo is state-of-the-art in his work, and a kind and caring professional. I can recommend him with the highest possible rating.  (5 Star Review on Healthgrades from M.G.)

Excellent-responsive and interested. (5 Star Review on Healthgrades)

My 83 year old mother-in-law fell in April and broke her hip which required emergency surgery. This was made even more tragic since it was during the height of Covid-19. Dr.Choo, who we could only meet by phone, was extremely kind, compassionate and professional. He addressed all of our questions and concerns and really put our family at ease during this difficult time. At our request and without hesitation, Dr. Choo called a friend of ours, a surgeon at HSS, to go over the case prior to surgery. I don’t know many doctors who would have agreed to do that. The surgery went extremely well and I am happy to report that my mother-in-law is doing fabulous! Thank you Dr. Choo!

I waited three years in pain and at the end of 2019 I was in so much pain that I was dragging my right leg, the pain was incredible. I went to see Dr. Choo, he made me feel that he can give me my life back and he did. I suffered for 3 years because I was afraid. Today I’m so happy. On valentine’s day 2020, I got a new hip and the surgery was great, the pain management was great and I didn’t end up needing extra strong medicine. I was determined to get better and I was walking right after surgery. Thank you to Dr Choo and all his collegues, I have my life back and I can do anything I want with no pain. (5 Star Review on Healthgrades from G.I.))

I knew I probably needed a total hip replacement for several years, but I was terrified.
After a trip to the ER when attempting to ride my bike, I realized it was time. I was very impressed with Dr. Choo’s credentials and once I met him, I knew I had the surgeon I needed. He explained the procedure and what to expect really well, and that so helped to put me at ease. Dr Choo and his team are incredible. I am six months post -op and I can’t believe how great I feel. Thank you, Dr. Choo! (5 Star Review on Google)

If it were possible, I would give Dr. Choo 6 stars. My emergency broken hip surgery was perfectly executed by Dr Choo. He was a gift to me from heaven. His kindness, understanding, professionalism/knowledge and skill was the perfect package. I’m very grateful he was on call for my accident. (5 Star Review on Healthgrades from M.S.)
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WEBINARS

Understanding Knee Pain

Joint Replacement Symposium

AWARDS AND HONORS

American Orthopaedic Association (AOA), Emerging Leader  – UCSF

American Orthopaedic Association (AOA), C.McCollister Evarts Leadership  – UCSF

Health Volunteers Overseas (HVO) Traveling Fellowship – UCSF (Managua, Nicaragua)

Scholarship and Discovery Research Grant – University of Chicago

Howard Hughes Medical Institute (HHMI) Research Grant – Stanford University

PEER-REVIEWED PUBLICATIONS

Yazdi, H, Choo KJ, Restrepo C, Hammad M, Sherman M, Parvizi J. Short Term Results of Triathlon Cementless versus Cemented Primary Total Knee Arthroplasty. The Knee. 2020. (accepted, pending publication)

Choo KJ, Austin M, Parvizi J.  Irrigation and debridement, modular exchange and implant retention for acute periprosthetic infection after total knee arthroplasty.  Journal of Bone and Joint Surgery (JBJS) Essent Surg Tech. 2019. 

Choo KJ, Grace TR, Khanna K, Barry J, Hansen EN. A Goal-directed Quality Improvement Initiative to Reduce Opioid Prescriptions After Orthopaedic Procedures. JAAOS Global Research & Reviews. 2019 Sept 17;3(9)

Grace TR, Choo KJ, Patterson J, Khanna K, Feeley, BT, Zhang AL. A Review of Inpatient Opioid Consumption and Discharge Prescription Patterns after Orthopaedic Procedures.  Journal of the American Academy of Orthopaedic Surgeons. 2019.

Grace TR, Khanna K, Choo KJ, Croci R, Feeley BT, Ma CB, Zhang AL.   The Influence of Preoperative Opioid Use on Inpatient Opioid Requirements and Discharge Medication Prescriptions After Primary Shoulder Arthroplasty.  J Shoulder Elbow Surg. 2018; Apr 24. pii S1058-2746(18)30173-

Wong K, Burns R, Mohan R, Yi PH, Choo KJ. Variability in Conflict of Interest Disclosures by Physicians Presenting Trauma  Research. World J Orthop. 2017; Apr18;8(4):329-335

Choo KJ, Yi PH, Burns R, Mohan R, Wong K. Variable Reporting by Authors Presenting Arthroplasty Research at Multiple  Annual Conferences. J Arthroplasty. 2017; 32:315-219

Wang Z, Tran M, Bhatia N, Hsing A, Chen C, LaRussa M, Fattakhov E, Rshidi V, Hang KY, Choo KJ, Nie X, Mathy J, Longaker MT, Dauskardt R, Helms J, Yang GP. DEL1 Knockout Mice Developed More Severe Osteoarthritis Associated with Increased Susceptibility of Chondrocytes to Apoptosis. PLoS One.  2016 Aug 9;11(8)

Horst PK, Choo K, Bharucha N, Vail TP.  Graduates of Orthopaedic Residency Training are Increasingly Subspecialized: A Review of the American Board of Orthopaedic Surgery Part II Database. J Bone Joint Surg Am. 2015 May 20;97(10): 869-7

Morshed S, Choo KJ, Kandemir U, Kaiser SP. Internal Fixation of Posterior Pelvic Ring Injuries Using Iliosacral Screws in the Dysmorphic Upper Sacrum. JBJS Essent Surg Tech. 2015 Feb 11; 5 (1): e3

Choo KJ, Arora VM, Barach P, Johnson JK, Farnan JM. How Do Supervising Physicians Decide to Entrust Residents with Unsupervised Tasks? A Qualitative Analysis. J Hosp Med. 2014 Mar;9(3):169-75

Choo KJ, Morshed S. Postoperative Complications After Repair of Tibial Plateau Fractures. J Knee Surg. 2014 Feb;27(1):11-9

Guzman R, De Los Angeles A, Choo K, Gaeta X, Cote J, Cheshier S, Steinberg GK. Intra-carotid Delivery of CD49d FACS Sorted Neural Stem Cells Enhances Angiogenesis and Improves Functional Outcome After Stroke. Stroke 2008 (39);527-72

TEXTBOOKS 

Choo KJ, Lonner JH. (2019) Treating Patellofemoral Osteoarthritis with Unicompartmental and Bicompartmental Knee Arthroplasty.  Unicompartmental Knee Arthroplasty: Indications, Surgical Techniques and Complications. New York, NY: Springer Publishing. [textbook chapter]

ORAL PRESENTATIONS

Choo KJ, Malkani K, Cooper AM, Yazdi H, Parvizi J. Dual-Mobility Bearings and Constrained Liners in Revision Total Hip Arthroscopy: A Comparison of Outcomes. American Academy of Orthopaedic Surgeons (AAOS) National Meeting (2020)

Grace T, Khanna K, Choo K, Zhang A. Does Tailoring Discharge Opioid Regimens to Inpatient Use After Orthopaedic Procedures Affect Refill Rates. Western Orthopaedic Association Annual Meeting, Snowmass, CO. 2018 August 2.

Choo KJ, Sing D, Hansen E. Psychological Distress after Diagnosis and Treatment for Prosthetic Joint Infection.  UCSF Abbott Society Scientific Program (2018)

Choo KJ. Conflict of Interest in Orthopaedic Surgery.  UCSF Dept. Orthopaedic Surgery Grand Rounds (2017)

Choo KJ, Morshed S, Wustrack RL, O’Donnell RJ. Femoral Pathologic Fracture in Morbidly Obese Patient Managed with External Fixation and Compressive Osseointegration.  Advances in Orthopaedic Osseointegration Conference (2015)

Choo KJ, Arora VM, Barach P, Julie JK, Farnan JM. When Do Supervising Physicians Decide to Entrust Residents With Unsupervised Tasks? A Qualitative Study. Society of General Internal Medicine- National Conference (2012)

Choo KJ, Farnan JM, Barach P, Arora VM. Factors that Determine Entrustment, Supervision, and Autonomy of Housestaff During Inpatient Medicine Rotations: A Qualitative Study. Society of General Internal Medicine- Midwest Conference (2011)

Choo KJ, Wang Z, Longaker MT, Yang GP. Histomorphometric Analysis of Tibial Bone Fracture in Del-1 Knockout Mice. American College of Surgeons Clinical Congress (2009)

POSTER PRESENTATIONS

Choo, KJ, Rajaravivarma, R, Hozack W. Effect of Femoral Head Material on Head-to-Trunnion Impaction Motion and Taper Stability.  Orthopaedic Research Society (ORS) Annual Meeting (2020)

Choo KJ, Farnan JM, Barach P, Arora VM. Factors that Determine Entrustment, Supervision, and Autonomy of Housestaff During Inpatient Medicine Rotations: A Qualitative Study. Midwestern Hospitalist Medicine Conference (2011)

Choo KJ, Taxy J, Blair EA. Salivary Gland Mucoepidermoid Carcinoma: An Institutional Review. American College of Surgeons Clinical Congress (2010).

James G. Cunningham, MD

James G. Cunningham, MD is an orthopedic surgeon who specializes in sports medicine. His practice focuses on adult and adolescent sports medicine, knee and shoulder surgery. Dr. Cunningham graduated from Manhattan College and attended medical school at New York University. He completed his residency for orthopedic surgery at Mount Sinai Hospital in New York City and his fellowship in sports medicine at New England Baptist Hospital in Boston, Massachusetts. Dr. Cunningham has served as team physician for Greenwich High School athlete teams for over 20 years and for the Iona Preparatory School for 10 years. He is board certified in sports medicine by the American Board of Orthopaedic Surgery.

Please click here to schedule an appointment.

Testimonials

As always, phenomenal service and care from the time I walked up through the time I walked out – front desk staff, doctor, x-ray tech, billing. Dr. Cunningham is transparent, informative and patient. Overall I couldn’t be happier. 5 Star Google Review from A.E.)

We are so pleased with the service and treatment at ONS. Dr. Cunningham has been so patient, helpful and took amazing care of our daughter. I’m happy to speak to anyone about what they can expect. (Patient comment on ONS Facebook page)

This is the best medical practice I have ever experienced. Dr. Cunningham was terrific and I cannot say enough good things about him. He has a great staff and it is very much appreciated. (Patient Survey)

Dr. Cunningham has been my doctor for many years and has done a successful meniscus repair 6-7 years ago. More recently he helped me with a stiff shoulder 3 years ago, (advising excellent stretching exercises that worked) and has been very helpful with my knee and ankle problem. On my latest visit he was very effective in assessing the problem with my knee by recommending and administering a cortisone shot (which had excellent results) and laying out a plan for the next six months so I can return to golf. As I age he is an important medical partner. (F.B.)

ONS has some of the best physicians and Dr. Cunningham is one of the best! (Patient Review)

Dr. Cunningham: After coming from a less than adequate experience from another practitioner and staff, I was truly amazed and pleasantly surprised at the professionalism and courtesy of your office extended to me as a new patient. From receptionist to doctor, I enjoyed my experience! Thank you!! (Patient Survey)

Cos Cob resident J.M. was 24 when he was playing basketball with friends and tore his ACL. An x-ray at Stamford Hospital indicated no broken bones but Jason was advised to see an orthopedist. The next day, he visited James Cunningham, MD. A physical examination determined he had most likely ruptured his ACL. An MRI confirmed the diagnosis. “An avid basketball player and all-round athlete, J.M. was a good candidate for an ACL reconstruction,” said Dr. Cunningham who, in the surgery last April, used part of his patient’s patellar tendon to reconstruct the ACL. The surgery also included work on a partially torn meniscus. The surgery lasted an hour and a half and J.M. went home later the same day. His recovery was steady and his pain was managed with Advil. After five days he began a physical therapy program, which he followed three days a week for the first month and gradually reduced over the following few months. His knee regained full flexibility and before long he returned to playing basketball with his friends. (J.M.)

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Continue reading “James G. Cunningham, MD” →

Demetris Delos, MD

Demetris Delos, MD is a fellowship trained, board-certified orthopedic surgeon who specializes in knee, shoulder and elbow conditions. He is a nationally recognized leader in sports medicine and knee and shoulder surgery. Dr. Delos has over 30 peer-reviewed articles and more than 50 national and international presentations. He has authored or co-authored more than five textbook chapters.

Dr. Delos has a particular interest in minimally invasive methods of shoulder surgery and complex knee preservation surgery, including revision surgery for torn ligaments, meniscal and cartilage transplantation, and joint replacement (both partial and total). Also, he has a particular interest in biologic forms of treatment, such as platelet rich plasma (PRP) and stem cell therapy, and has conducted seminal research on the topic.

Further, as an athlete whose playing career was affected by a serious knee injury, Dr. Delos works with competitive athletes and weekend warriors to help them achieve their goal of returning to highest levels of activity possible. He has extensive experience caring for athletes of all competitive levels, including professional, college and high school athletes. He is a former assistant orthopaedic surgeon for the NY Giants Football team and is currently the team physician for the Purchase College Athletic Department and the Westchester Flames semi-professional soccer team. Dr. Delos also serves as a team physician for many local high schools, including Greenwich High School and Iona Prep.

Dr. Delos earned his medical degree from Weill Medical College of Cornell University and completed his orthopaedic residency at Hospital for Special Surgery (HSS)/New York-Presbyterian Hospital. He completed a research fellowship at the HSS Laboratory for Soft Tissue Research as well as a surgical fellowship in Sports Medicine and Shoulder Surgery at HSS, where he was Chief Administrative Fellow.

Please click here to request an appointment.

Testimonials

I have had several significant orthopedic procedures and, after a bike accident, decided to try ONS and Dr. Delos after hearing so many good things. Every aspect of my treatment was IMPECCABLE including: Speed to first consultation (same day); speed to surgery (would have been next day but had to wait a week due to COVID testing); never waited more than 3 minutes on any visit; first class surgical center in Stamford; professional and compassionate interaction with Dr. Delos, never late, never rushed, very clear and helpful answers to every question, no doubt that at the time you are with him you are his number one priority. ONS is a first class operation that clearly takes great pride in every aspect of their treatment. As a patient, what is most important to me is great medical care. It was a surprising bonus to also receive a truly first-class customer experience every step of the way whether at check in, radiology, pre-operative procedures, appointment scheduling, etc. (5 Star Review on Healthgrades)

I had both knees replaced by Dr Delos in June and was back to work full time in 3 weeks. By 6 weeks i was walking like a track star and nobody could tell that i ever had surgery. If you are considering a knee replacement run, don’t walk, and go see Dr Delos!  (5 Star Review on Healthgrades from B.H.)

The ONS surgical team, physical therapy team and admin are all amazing. I had the good fortune of working closely with Dr. Delos and Tanya K., DPT (Greenwich PT Director), and they, and all on their team/staff were kind, knowledgeable, professional, efficient – – and it is clear they genuinely care about their patients and their improvement! They also give you the confidence and support you need to get through your recovery. From the moment you hobble in the door to the moment you walk out (better than ever), each member of the team makes a point get to know and be there for each individual client – particularly, so if you have a question or any need anything at all, someone on the team can assist you promptly/safely. They definitely go above and beyond in their patient care and it shows in the results! I never expected my recovery to be so pleasant and faster than expected! (5 Star Review on Google from S.S.)

Dr. Delos explained my displaced meniscus injury and his recommendations for fixing it so that I could get back to doing what I could before. He was very clear and very positive in his description, diagnosis and surgery to be done. I had been suffering for over a month and received several other recommendations from another doctor. I felt confident that the surgery he recommended would fix the issue. He also was able to get me in for the surgery within the week. Arthroscopic surgery went well, physical therapy went well and I was able to walk without a cane and drive in 2 weeks. No pain after surgery. It was important to get to PT quickly after surgery and to follow the plan outlined by the therapist. I would recommend Dr. Delos for a knee injury.  (5 Star Review on Healthgrades, Aug. 6, 2019)

I recently had my ACL done by Dr. Delos. It was a great experience and the surgery went really well. I am really happy with how it is healing and how quickly I was able to get back to regular life.

Dr. Delos operated on my biceps as I ruptured it at the elbow. From initial consult to surgery to follow-ups, everything went fantastic. He explained everything, appointments were quick and easy and I couldn’t have been any happier. I would highly recommend him!!! (Five Star Review on Healthgrades from JA)

Dr. Delos changed my life! I went into my first appointment not knowing what to expect, and truly scared. He was kind, understanding, and extremely knowledgeable of my situation. I went in thinking my knee was dislocating, and after ten minutes of talking and examining my knee, Dr. Delos explained to me that my knee cap was dislocating, making it looser each time. I had surgery a month later and now I feel so much more secure! I can do everyday activities with ease, whereas before I was scared to even walk. I highly recommend Dr. Delos! He was amazing in every way! (5 Star Review on Healthgrades from B.A., Jul 2, 2019  )

Dr. Delos is wonderful. I went to him as a second opinion about my knee osteoarthritis.  After that meeting, I knew I needed to have him do my surgery. I’m only 4 weeks out, but there is a positive difference already. I was scared to death if the total knee replacement and he made it so much easier for me. Dr Delos takes pride in his work which shows in the results, thank you Dr. Delos! (Comment on Instagram from E.F.)

Dr. Delos is an amazing man and surgeon. I had concerns about another physician that I was going to and heard great things about Dr. Delos, so I went to him for a second opinion. He was completely straight with me and reviewed everything with me. I  didn’t feel the least bit rushed. He took all the time that I needed. I walked away knowing what was wrong with my knee and subsequently, chose him for my total knee replacement. His bedside manner is wonderful and he is compassionate, caring and confident. He made sure that I knew exactly what was wrong and how he would treat it. I had ad my surgery and  am 6 weeks out. I’m already driving and back to work! His office staff are all great, and my PT is going well. They are all so supportive, as Dr. Delos is. I would recommend him to anyone. I can’t say enough wonderful things about him. Thank you Dr. Delos!!!!!! I’m a new woman with a brand new knee!! (5 Star Review on Google from E.N.) 07/10/2019

Dr Delos is the best! He performed surgery on my shoulder after a car accident and it’s 100% better! No pain and absolutely no problems after the surgery. He recently did a total knee replacement for me. I was in excruciating pain before the surgery. He was so compassionate with me. I could truly feel he felt my pain and wanted it to go away. He wanted the best for me and that’s exactly what he did for me! I’m completely pain free, have absolutely no problems with my knee now. He gave me my freedom back. He is a wonderful, caring, skilful, and knowledgeable doctor. I can’t say enough about him! I highly recommend him, as I said, he is the Best!  (5 Star Review on Healthgrades from E.O.)

Dr. Delos is a great doctor. He performed surgery on my shoulder after massive injuries. There was no pain, and it healed very well. He takes his time when he talks to you and answers all questions. I am very pleased  with his work. (Five Star Review on Healthgrades from L.B)
Dr. Delos was fantastic. He made an expert repair on my torn tendon and the follow up and follow through with the Dr. and with ONS PT was outstanding. (5 Star Review on Healthgrades from J.M.  Jul 30, 2019)

Dr. Delos is an excellent person and doctor. Always on time for appointments. Awesome bedside manners. I never felt rushed. Always took the time to answer all of my questions. The facilities and staff were equally professional.  (5 Star Review on Healthgrades) September 11, 2019

My son had a torn ACL.  Dr. Delos is a great doctor, surgeon and has wonderful communication skills. Highly recommended. (5 Star Review on Google from C.R.)

My experience with ONS and Dr. Delos has been outstanding in every way. I had been suffering with osteoarthritis in my knees and was looking for a second opinion. During my first appointment with Dr. Delos and after his review of my x-rays and my medical history, he thoughtfully explained all of my options and we worked together to determine next steps. My condition was advanced and I had already tried medication and physical therapy which had not relieved my pain. I tried cortisone injections next, but this too proved to be of limited value and my ability to walk and degree of pain worsened. I ultimately decided to request bilateral knee replacement. Again, Dr. Delos went over everything with me in a patient and clear manner with all of the risks and benefits identified. I felt confident and prepared after our appointment and I knew that if I played my part both in prepping for and participating in the hard work after surgery, that I could return to a normal life. The entire ONS team was incredibly organized and helpful in every way. In no time, I was scheduled for surgery, booked for a pre-surgery class and all my questions were answered. Each person I interacted with was friendly, competent and caring. My surgery at Greenwich Hospital was a complete success. Dr. Delos and his team did an amazing job and the staff at the hospital was fantastic. I could not have asked for more. Today, 5 months after surgery, I am walking normally and without pain. I am continuing to exercise and follow the advice provided by my physical therapists and with each month that goes by I continue to be amazed at how different my life is than it was at this time last year. This surgery gave me my life back and I am forever grateful to Dr. Delos and his team of dedicated professionals for making that happen. (5 Star Review on Google from E.R.)

After years of PT, 2 surgeries that did not help, & numerous steroid injections I finally found ONS & Dr Delos. I WISH I had found him earlier! He listened to my story, understood MY situation & MY needs, evaluated MY condition & found a solution. He presented options & explained them all thoroughly. We made the decision together to undergo a partial knee replacement & WOW what a difference. At 7 months I walked a half marathon with NO ill effect, & I am back bike riding and hiking. And did I mention that this was an opioid free surgery – I did not need ANY strong painkillers – even in the hospital, I felt very little pain at all, I was only taking Tylenol!!! And as for the scar on my knee – what scar – you can barely see it! Thank you ONS and Dr Delos. (5 Star Review on Google from G.W.)

Dr. Delos performed ACL repair surgery as well as a meniscus repair after a ski accident in March 2018. Dr. Delos is not only an excellent surgeon, but also a caring and concerned doctor. I highly recommend him to anyone considering any type of knee surgery. I am almost back to my full strength and am forever grateful to Dr. Delos and the Physical Therapy team at ONS. (5 Star review on Healthgrades from M.R. in Riverside, CT)

Dr. Delos is an outstanding man, doctor, and friend. He helped save my leg and got me back on the field way quicker than anyone expected. Would recommend him to anyone who is looking for an orthopedic surgeon in Fairfield County, CT. One of the best around. (5 Star review on Healthgrades from P.)

Dr. Delos diagnosed my torn ACL and suggested reconstructive surgery using a part of my hamstring. I was reluctant to commit to surgery because of friends who had horror stories (with doctors in different practices), however Dr. Delos talked me off the ledge several times, boosting my confidence. Everything went seamlessly and his bedside manner both before and after the surgery was extraordinary. I couldn’t recommend him and the ONS team enough! (5 sSar review on Healthgrades from S.O. in Stamford, CT)

I was very pleased with the surgery Dr. Delos performed on my knee. I did not feel much pain at all after the surgery. I was walking normally in less than a week after my surgery. Dr. Delos was also very accommodating in that he used my MRI report from another center and didn’t make me do a new one, which saved me a lot of time. The office staff was also very good with all the follow ups and setting up appointments. Highly recommend Dr. Delos for knee arthroscopy. (5 Star review on Healthgrades by R.J.)

Dr. Delos was very helpful in determining expectations on the recovery time and reassuring that the whole process would go without a hitch. (5 Star review on Healthgrades from S.B. in Old Greenwich, CT)

Overall – very pleased. Great bedside manner and professional. Great surgeon and follow up post-surgery. Always available when needed as well as attention to detail. Listens to concerns and needs. Have recommended to friends and would go back. The staff at ONS was amazing also. (5 Star Review on Healthgrades from S.A.)

In a little less than two years ago, I had a small accident and broke my right shoulder. I had been seeing another physician for almost five months and my shoulder still wasn’t healing. The physician had tried of number of different things but nothing seemed to help. Needless to say my frustration level was over the top. Being right handed, many things in my life were quite difficult especially since my job requires me to type a lot on a computer.  I had just seen the physician for an appointment and he wanted to wait a few more weeks to see if what we had been trying for months might finally work to get my bone to heal. A member of my family convinced me to see a doctor in the ONS practice because they had helped him a few years earlier. I made an appointment for Friday, July 29 with Dr. Delos. I met with him and conveyed my overwhelming frustration and I needed something done quickly. After reviewing my case and seeing the other things that had been tried, he realized surgery was the only option left. I agreed but told him it needed to be done as soon as possible because in six weeks I was going away and needed to be well on the way to being healed by then. Well, he and the staff took my request very seriously and started jumping through hoops to get me in for surgery. The staff was very helpful in getting everything together. Everything about the surgery was explained so I understood the procedure and recovery very well. Well, five days later on Wednesday, August 3, I was in Greenwich Hospital getting my surgery. The surgery was a total success. All my follow ups went well and the staff took great care of me. I would easily recommend ONS for any orthopaedic needs, big and small. Thank you. I can’t explain how good it was to get back the use of my arm.  (F.V.O, 5 star review on the ONS Facebook page)

I had a bilateral knee replacement in May of this year and I could not be more pleased. While there was some concern about doing both knees at the same time, the procedure went extremely well and the recovery has been all I could have hoped for. I would highly recommend Dr. Delos for this procedure. If possible, he exceeded my expectations.  (5 star review on Healthgrades from a patient in Stamford, CT)

Dr. Delos is a wonderfully gifted orthopedic surgeon who is also incredibly compassionate and personable. He instills a well-deserved sense of confidence in his patients, and even has a sense of humor! Dr. Delos surgically repaired my fractured collarbone by affixing a metal plate. The fractured bone and surgical wound healed completely without complication and post-surgery pain was well-controlled and never an issue. I highly recommend Dr. Delos and the highly efficient staff at ONS. (Five star review on Healthgrades from a patient in Port Chester, NY)

Dr. Delos recently performed arthroscopic knee surgery for a torn meniscus. I was pleased by his conservative approach to addressing my injury with a plan I was comfortable with. I started with Physical Therapy first, and then ultimately surgery. He thoroughly explained what the surgery would entail, the recovery process and set a realistic expectation of when I could return back to exercising. (Five star review on Healthgrades from M. in CT)

Dr. Delos is an awesome surgeon. He performed a knee replacement for my husband. Could not have had a better surgeon. Dr. Delos also helped our daughter who was injured in Canada with a fractured hip. His approach to her was so positive, and he was extremely honest with her prognosis as long as she followed his direction. She is now doing full marathons and an Ironman. All of this was because of Dr. Delos. He is the best surgeon I have ever met. His people skills are beyond reproach as well as his office staff. (Comment from Rate MDs)

I broke my shoulder and arm and Dr. Delos was brought in to operate on me. He’s got a wonderful manner about him and he’s an excellent doctor who follows up with his patients. (comment from Health Grades)

Dr. Delos is a very competent and caring surgeon, who is respectful of his patients as well as their time. He is knowledgeable and capable as well as kind. He operated on my broken ankle and I had an excellent results. (comment from Health Grades)

If it wasn’t for Dr. Delos I would not be walking without pain. I am almost 7 months out from TKR and I feel great!!! I am back to my normal routine. Dr. Delos’s bed side manner is fabulous. He is caring and listens to what you have to say. I recommend him all the time when people ask who did my surgery. (comment from Health Grades)

I broke my knee cap in 7 pieces. Dr. Delos repaired my knee with such expertise that I have healed quicker than expected. His professionalism is excellent and I would recommend him to my family and friends. (comment from RateMD)

Dr. Delos is not only an exceptional doctor, but he is caring and compassionate. My daughter had a torn ACL and Meniscus and was scheduled to compete in Disney. Dr. Delos worked with her to assure she could take the mat and compete prior to her surgery. He was factual but understanding of the opportunity she had in going to Disney. I would recommend him to EVERYONE in need of his specialty. (comment from RateMD) 

Young, innovative, and on the cutting edge of his specialty. Dr. Delos replaced both my knees and I had wonderful results with minor pain, minimized by his phenomenal anesthesia formula. Best of all, the lack of external stitching (using medical glue instead) eased the healing process and left no ugly scarring. I could not ask for better results. Highly recommended by HSS and deservedly so. Thanks Dr. Delos. (comment from RateMD)

Dr. Delos and the entire staff at ONS are and always have been so friendly and professional. I cannot say enough positive things about him and will gladly recommend him and ONS to any and every one! Thank you all so much! (D.P.)

Dr. Delos has been an excellent physician throughout. I always felt like we were in this together. (Patient Survey)

I’ve had my share of experiences with orthopedic surgeons. But I must say Dr. Delos is by far one of the best if not the best doctor I’ve ever been to. He strives to do the best for you and your recovery. Thank you for all of your help Doc because of you I can go back to my normal life. God bless you this and every day. (R.M.)

For 21 year old S.R. the first game of the Division III  soccer season at SUNY Purchase was her last.  She twisted her knee awkwardly while running down the field and tore the anterior cruciate ligament (ACL) in her knee. She knew the ordeal she was in for, having torn the ACL in her other knee four years earlier while playing high school soccer.  “I knew there would be surgery and six months of rehabilitation, but  it was my senior year and I was determined to be back in shape to play lacrosse in the spring,” she said.

With the help and guidance of sports medicine specialist, Dr. Demetris Delos, S.R. achieved her goal.  Not only did S.R. contribute to her team’s 9 and 3 season, she was named MVP of the team, and Female Athlete of the Year by the university. She also qualified for the First Team All Conference and All Regional in lacrosse.

“Dr. Delos was so nice and friendly and straightforward in terms of expectations and recovery time. He turned a bad situation into a great experience.”  (S.R.)

Sam McCanncropp

12 year old soccer player, Sam M., was on top of his sport when he developed knee pain and swelling after a fall during a game last June. He kept it to himself because he didn’t want to jeopardize his chance to compete internationally at the Madrid Cup in September.  Although he did make it to the tournament,  he spent most of his time on the sidelines with his knee too painful, swollen, and difficult to move.

Upon returning home, Sam’s mother, Paula, brought him to see Dr. Demetris Delos, a sports medicine physician who specializes in knee injuries.  Dr. Delos ordered an MRI, which revealed a slight fracture in Sam’s knee and a one inch piece of loose cartilage that would require surgery to repair.  The injury was close to the growth plate, which could have had long term consequences.  However, the surgery went well and Sam is back on the soccer field with his sights on the Hackley School’s Academy Team.

“Dr. Delos was always positive and everything he said would happen transpired, “said Paula M., Sam’s mother. “I was very impressed with the high level of care and collaboration with the physical therapists because they all wanted Sam to achieve his goal.  Everyone was unbelievably caring.” (S.M.)

When my arthritis got so bad that I couldn’t walk, I knew I needed to have my right knee replaced. I went to ONS because my daughter had been treated by Dr. Camel and Dr. Sahler, and I was very impressed by how supportive and caring they were. As soon as I met Dr. Delos,  I had every confidence that I was in good hands. He has a great bedside manner, he’s honest and straightforward. He took the time to answer every question my husband and I had about the procedure. Two months after my surgery, I was able to take a trip to Cancun and walk around the Mayan ruins and the only thing that bothered me was the heat.  I’m going to Disney World next month, and I can’t thank Dr. Delos for making it all possible. I recommend ONS to everyone.  (S.S.)

In July  of 2014, Dr. Delos performed ACL surgery on my daughter.  Brooke is doing great!  In fact, since surgery Brooke has returned to playing volleyball & basketball.  She played Varsity Volleyball from Stamford HS where she was a setter.  She also played Varsity Basketball where she was the starting point guard.  Both teams had a great year, but the girls basketball team had a historical year. The Stamford Knights won the FCIAC Title (District title) and the CIAC Title (State Championship.)  Thanks to Dr. Delos, Brooke was a huge part of the team’s success. (C.K.)

I came home from my vacation in the Dominican Republic with two broken shoulders. Dr. Delos was absolutely amazing. He has a kind and caring bedside manner and when he told me I needed surgery on my left shoulder, I never had a thought to go anywhere else. I highly recommend him. (J.R.)

In 2014, local student athlete Brooke was playing basketball with her team in the 7th of 8 games at the AAU Nationals when she became injured during a layup after another player collided with her causing immediate knee pain. “I fell down and the trainer helped me off the court. We could see instant swelling and knew I needed to see a doctor” said Brooke.

Brooke suffered a painful injury which required surgery. ONS orthopedic surgeon Demetris Delos, MD performed surgery to repair a torn ACL and a partial meniscus tear. Brooke said, “I felt a little bit timid before the surgery but the surgery went well.” (more…)

Dr. Delos operated on my broken ankle 6 months ago and today I have graduated and am doing great! My experience was very good at ONS and I have a healthcare background so I am very picky when I choose a doctor. The ONS office is extremely well-run and the ambulatory care center is top notch. I’m not sure how they could do a better job and they called me the next day to see how I was doing after surgery. I’ve referred friends to ONS in the past months that have seen other specialists at ONS who have told me they have all had the same experience. I’ve even brought my daughter here for care. Dr. Delos is very knowledgeable, competent, and caring. (M.S.)

I had a full tissue tear of my rotator cuff. Dr. Delos examined me and pointed out the alternatives and how we could approach the injury. He explained his plan and operated to repair the damage at the ambulatory center. The experience was very good and they called me the next day to see how I was doing.

I needed physical therapy 3 days a week for the first few weeks, then twice a week and now I so much better six months later. (more…)

ONS is excellent! The staff is warm and very nice to children. I injured myself at work and came to see Dr. Delos. He explained that I needed surgery and it was scheduled at the Holly Hill Ambulatory Center. ONS and surgery center staff are lovely people. Dr. Delos was very human and made sure to explain all that I needed to have done to get back to normal. It was a perfect experience and I am pain free. (I.K.)

Dr. Delos, – “I was new customer at ONS. The staff showed me that they are really professional and made me feel comfortable, that they were reliable and it felt like home. Thanks everybody!” (Anonymous)

Everyone at ONS was very warm and friendly. Dr. Delos was extremely helpful and very direct with his thoughts and recommendations, which I liked! (Anonymous)

Dr. Delos was incredibly helpful and knowledgeable. He diagnosed my son’s Lyme disease almost immediately and this was confirmed by testing. (Anonymous)

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WEBINARS

Treatments for Shoulder Pain

VIDEOS

Listen to Dr. Delos discuss sports specialization with Rick Wolff on WFAN.

Watch Dr. Delos’ January, 2016 appearance on Health IQ with Dr. Siegel.

Read about a distinguished panel including Dr. Delos on the subject of maximizing a child’s athletic potential.

Dr. Delos discusses Meniscal Allograft Transplantation, below:

Dr. Delos discusses Outpatient Total Knee/Total Shoulder Replacement, below:

Continue reading “Demetris Delos, MD” →

Frank A. Ennis, MD

Frank Ennis, MD, specializes in hip and knee replacement, hip arthroscopy, complex revision arthroplasty of the hip and knee, and treatment of complications from hip fractures. He is fellowship-trained in adult reconstructive surgery. Dr. Ennis is a staff orthopedic surgeon at Greenwich Hospital and was among the first orthopedic surgeons in the New York Metropolitan area to do computer-assisted surgery for total knee and hip replacement. This cutting edge technique uses computerized navigation to guide the surgeon for improved accuracy in joint replacement surgery.

Further, after completing undergraduate studies at Yale University and post-baccalaureate pre-medical studies at Harvard University, he graduated from Duke University School of Medicine and completed his residency at Yale University Department of Orthopaedic Surgery. Additionally, Dr. Ennis completed Fellowship training in adult reconstructive surgery at New England Baptist Hospital in Boston,  MA.

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Tim Greene, MD

Tim Greene, MD is an orthopedic surgeon who is fellowship trained in sports medicine and hip arthroscopy, a technique that has revolutionized the treatment of various hip problems. Dr. Greene graduated Princeton University and earned his medical degree at the Medical College of Georgia. He practiced his residency in orthopedics at Emory University and served as associate team physician to the athletic teams at Georgia Tech.

Dr. Greene completed fellowship training at the Steadman Hawkins Clinic in Vail, Colorado under the direction of Dr. Marc Philippon. While there, he served as associate team physician for the U.S. Ski Team.

Dr. Greene’s interest in sports medicine derives from his ongoing personal interest in sports. While at Princeton University, he was team captain in varsity football and earned numerous awards for outstanding athletic achievement.

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Testimonials

I am a Director of Critical Care and a seasoned RN as well. Dr. Green is top notch- I send everyone to him that I can. He is humane, highly comprehensible, takes his time, explains things well and is clinically excellent! The surgery center he uses in Stamford was excellent, clean, great staff and everyone was in the same page! (5 Star Review on Google from L.J-K.)
I can’t say enough positive things about Dr. Greene. I am a professional tennis player and had a literal and figurative pain in the butt when I played. Other symptoms included recurrent groin “pulls” and glute strains and deep achy pain across my low back. No one could properly diagnose the underlying cause until I saw Dr. Greene, who diagnosed me with labral tears and impingement (FAI) in both hips. My symptoms did not perfectly align with those typical of FAI, but he believed this to be the cause and we decided it was best to operate given my urgency to get back to the tour. He basically did a rim trim, osteoplasty and labral repair on both sides (6 weeks apart). This decision had me so anxious, and now I sit here 3.5 months after my second hip surgery, Indian-style… sorry, it’s 2020… “cross-legged” with no pain whatsoever! I am back to playing tennis and weight training – already doing things I previously could not. I couldn’t be happier with my decision to use Dr. Greene over other prominent surgeons in NYC and CT. He is by far the most trustworthy, communicative, personable (and probably most skilled) of the four surgeons I saw… he also has a great sense of humor, despite being a Falcons fan. (5 Star Review on Google from S.K.)

I thought it was important to send a note to someone at ONS about Dr. Greene and Alicia Hirscht, DPT. I have been treating with Dr. Greene for a torn abductor tendon and other hip issues since December. I started PT in Stamford under Alicia Hirscht. I would easily recommend either practitioner to a family member.

Dr. Greene’s communication was clear and concise when weighing treatment options.  PT Hirscht made room in her schedule for me and took the time and effort to get me up and playing tennis again. They are both true professionals and showed an incredible amount of patience working with me to recover from my chronic injuries.

Keep up the excellent work and hiring practices. (note from patient P.Y.)

Unbelievable experience after many years and many doctors and feeling incredibly defeated I randomly saw ads for this place and figured what do I have to loose. After one visit, Dr Heftler figured it out. By this point I’d already had 6 MRIs from other doctors, medications, injections to no avail. He called me with the news himself not a nurse. I couldn’t be more impressed and grateful. I couldn’t be more grateful to him after years of debilitating pain someone finally figured it out. He then referred me to Dr Greene for surgery, another fantastic experience. All in all I will ONLY ago here for any orthopedic needs and send everyone else here. PT employees are fabulous, nurses and desk staff always made a pleasant experience. Highly recommend. (5 Star Review on Yelp from E.C.)

 

I am a Director of Critical Care and a seasoned RN as well. Dr. Greene is top notch- I send everyone to him that I can. He is humane, highly comprehensible, takes his time, explains things well and is clinically excellent! The surgery center he uses in Stamford was excellent, clean, great staff and everyone was in the same page! (5 Star Review on Google from L.J.K)

Just took my daughter to an appointment with Dr. Tim Greene after a disappointing appointment at another orthopedic office not affiliated with ONS. If I was able to…I would give Dr. Greene and ONS a rating much higher than 5 Stars.

I could not have been more impressed with every aspect of my daughters care. The offices were clean & the staff was extremely welcoming & friendly. We were brought into the exam room early which in most cases doesn’t happen at a doctors office.

Dr. Greene came in and listened to our concerns/issues, examined our daughter and was in absolutely no rush to move on to his next patient. He answered all of our questions, explained the X-Rays to us and expressed genuine care for her injury and treatment. He made sure we understood everything and had a plan going forward.

We also had concerns about how to schedule MRI’s and other testing. He immediately sent a note to someone on his team to help us. We sat with Jessica who took her time and made all the arrangements for us. She also followed up the next day with info we needed to make sure everything was done right.

About 3 hours after our appt. with Dr. Greene my wife and I had a question we forgot to ask. We called the office after Dr. Greene had left but a message was taken and I was assured either Dr. Greene or his assistant would call back the next day. They called in the morning and answered everything for us.

Being an athlete and also a firefighter I have seen a lot of orthopedic surgeons and have been to many practices and I can say this was one of the best experiences I have had. In my opinion they go way above the standard of care. I would highly recommend Dr. Greene to anyone who may need orthopedic care. (5 Star Review from Google from P.F.)

I have been coming here for at least 15 years and have seen a variety of amazing doctors … Dr. Greene being a favorite in our household for years and would trust him with everything.  Recently I broke my elbow and was sent to Dr. Vadasdi.  She was amazing! Great with surgery and aftercare. Very compassionate throughout the whole process! Thank you ONS for getting me through everything! (E.D.)

The ONS team is like family. Dr.Greene is my hip doctor and he is excellent!! I feel that I am in great hands from the moment I walk in the doors.. Thank you ONS. (T.A.)

Dr. Greene: It has been 6 weeks since you mended my fractured left clavicle and I continue to make progress in my recovery. I estimate that my range of motion in the shoulder is close to 90% and I am beginning to cautiously build strength in the muscles affected by my injury. I wish you a wonderful Thanksgiving, and this year I am especially grateful for having such a great orthopedist as you. – (R.G.)

 

Doctors, Nurses, Therapists, and support staff: This is a big THANK YOU for all the expert and attentive care you extended towards my recovery from a broken pelvis and elbow after a spill on black ice in December ’09. Let everyone know, there is Zumba after broken bones heal. I received excellent care at Greenwich Hospital, with elbow surgery by Dr. Greene (yay for titanium). Each of you as a part of this “total team” took me from being in excruciating pain and bedridden to no pain and full function and then some! – (L.A.)

 

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Continue reading “Tim Greene, MD” →

Steven E. Hindman, MD

Orthopedic surgeon Steven Hindman, MD, treats the full spectrum of orthopedic conditions and injuries from ankle sprains to ACL ruptures to degenerative joint disease. He is actively involved in injury prevention on behalf of the ONS Foundation for Clinical Research and Education, and speaks to community groups on fall prevention, skiing injuries and osteoporosis. Dr. Hindman is the Director of Orthopedics at Greenwich Hospital.

Dr. Hindman was born in Newtown, MA and graduated from University of Rochester, New York. He received his medical degree from Albert Einstein College of Medicine in New York in 1982 and did his residency in Orthopedic Surgery at Montefiore Hospital, Albert Einstein College of Medicine in New York from 1982 to 1987. Dr. Hindman is Board Certified by the American Board of Orthopaedic Surgery and is a former Assistant Professor of Orthopedic Surgery at Albert Einstein College of Medicine. Further, Dr. Hindman is included in the list of Castle Connolly New York Area Top Doctors.

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Testimonials

Dr. Hindman has been treating me for years now with my ongoing injuries. He diagnoses for all my ailments have been spot on, I highly recommend Dr, Hindman and the ONS team for professional quality care in keeping my mobility and quality A+ (5 Star Review on Google by G.R.)

Dr. Hindman is a very kind and compassionate physician. I like that he goes the extra mile to help you return to your optimal health. (Patient Survey)

Loved the in-practice availability. Dr. Hindman was able to schedule an MRI on an early Sunday morning very quickly with no hesitation which worked out perfectly for me. (Patient Survey)

Dr. Hindman– Thank you for coming the the Mogul Meister Ski Club meeting to give us a presentation on injury prevention. It was very much appreciated.

Dr. Hindman– Thank you so so much! (LMK)

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Brian Kavanagh, MD

Brian F. Kavanagh, MD

Joint replacement specialist Brian Kavanagh, MD is a staff orthopedic physician at Greenwich Hospital where he has performed more than 6000 surgeries over the past 25 years. Board-certified by the American Board of Orthopaedic Surgery, Dr. Kavanagh graduated Princeton University and attended University of Connecticut School of Medicine. His internship and residency were performed at the Mayo Clinic, Mayo Graduate School of Medicine in Rochester, Minnesota. He served on the full-time faculty at the Mayo Graduate School of Medicine for seven years and on the teaching staff at Yale University School of Medicine in New Haven for five years. In addition, he is a former consultant to the Department of Orthopedics at the Mayo Clinic, where he specialized in hip and knee reconstruction. He was also an instructor in the hip and knee total joint fellowship program.

Further, Dr. Kavanagh has authored and edited numerous articles and book chapters and serves on the editorial staff of the Journal of Arthroscopy and the publication, Clinical Orthopaedics and Related Research. Also, he is an examiner for the American Board of Orthopaedic Surgery and a member of several specialty orthopedic societies.

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Dr. Marc Kowalsky

Marc S. Kowalsky, MD

Dr. Kowalsky is a board-certified orthopedic surgeon with expertise in surgical and nonsurgical management of sports injury of the shoulder, elbow and knee, as well as complex shoulder and elbow conditions, including degenerative disease, trauma, and revision surgery. He has a particular interest in the management of shoulder and elbow arthritis, instability, ligament and tendon injuries, knee ligament injury and cartilage disorders. Dr. Kowalsky has authored original research manuscripts, review articles, and textbook chapters focusing on AC joint reconstruction, rotator cuff repair, and shoulder replacement. He currently serves as a reviewer for the Journal of the American Academy of Orthopaedic Surgeons, Journal of Shoulder and Elbow Surgery and the American Journal of Sports Medicine.

Dr. Kowalsky has cared for college and professional athletes at every level of competition. He has provided sports medicine coverage for the Tournament of Champions Squash Tournament and the United States Open Tennis Championship. As a sports medicine fellow, he was an assistant team physician for the New York Jets and the New York Islanders. He previously served as orthopedic surgery consultant for New York City Public School Athletic League Rugby and Play Rugby USA, and as the Medical Director of the New York Rugby Club Annual New York 7s Tournament. He currently serves as team physician for the White Plains Rugby Football Club, Iona College Rugby Football Club, and the Greenwich High School Rugby Team. Dr. Kowalsky is a team physician for the CT Whale of the National Women’s Hockey League, and of the USA Rugby National Team.  He currently serves as medical director for the Northeast Academy national development rugby program.

 

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Dr. Pau Sethi

Paul M. Sethi, MD

Paul Sethi, MD is a board-certified orthopedic surgeon who specializes in sports medicine conditions of the elbow, knee and shoulder. He is a leading research physician who speaks at academic and instructional medical conferences in the US and abroad. His research on surgical advances in his specialty is regularly published in leading medical journals, including the Journal for Shoulder and Elbow Surgery, Arthroscopy, and the Journal of American Academy for Orthopaedic Surgery. He also collaborates with outside companies for education and research purposes and to develop medical procedures on the shoulder, elbow and knee. Dr. Sethi is a member of the prestigious American Shoulder and Elbow Society and American Academy of Orthopedic Surgeons. He is President of the  ONS Foundation for Clinical Research and Education(ONSF).

Dr. Sethi completed a sports medicine fellowship at the Kerlan Jobe Orthopaedic Institute in Los Angeles, CA. His research on athletic performance while a resident surgeon at Yale, his studies of professional basketball players, and his experience as a college varsity athlete have provided Dr. Sethi with an informed perspective of sports-related injuries and conditions.

Dr. Sethi served as orthopedic consultant to the Los Angeles Dodgers baseball team. He is a former assistant team physician of the Los Angeles Lakers basketball team, Los Angeles Kings hockey team and the Los Angeles Dodgers. He is also a former assistant team physician of the University of Southern California football team.

Dr. Sethi serves as team physician to Greenwich High School, Brunswick High School and Iona Preparatory High School. In regular speaking engagements he asserts that proper fitness conditioning is essential to preventing sports injuries for professional as well as amateur athletes.

As President of the ONSF,  Dr. Sethi’s research has recently included clinical study of the non-opioid solutions for post-surgical pain management; the establishment of better methods for surgical skin preparation (cleaning) to lower the risk of surgical infection; development of a new technique to repair chronic or weakened biceps tendons; and the evaluation of surgical needles in tendon surgery to establish international guidelines on needle use.

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Katherine B. Vadasdi, MD

Director of the ONS Women’s Sports Medicine Center, Katherine Vadasdi, MD is an orthopedic surgeon who is fellowship trained in adolescent and adult sports medicine as well as shoulder and elbow surgery.

Dr. Vadasdi graduated from Dartmouth College and earned her medical degree at Dartmouth Medical School. She performed a residency in orthopedics at the Hospital for Special Surgery (HSS) in New York and completed fellowship training in shoulder, elbow and sports medicine at Columbia University Medical Center, Department of Orthopedics. While at Columbia she was assistant team physician to Columbia University Athletics.  Dr. Vadasdi has been honored as a Castle Connolly America’s Top Doctor and Regional Top Doctor annually since 2014.  In 2017, she was the recipient of the Fairfield County Doctor of Distinction Award and was named among the Exceptional Woman in Medicine by Castle Connolly. In 2019, Dr. Vadasdi was honored with a Women Who Inspire award from the Greenwich YWCA.

RESEARCH AND COMMUNITY OUTREACH

As member of the Board of Directors at the ONS Foundation for Clinical Research and Education, Dr. Vadasdi is active in ongoing research, including the current groundbreaking study to curb opioid addiction among teens and athletes. She has been published in numerous prestigious industry journals such as the Journal of Shoulder and Elbow Surgery and the Journal of Orthopaedic Trauma.

Additionally, Dr. Vadasdi serves as a mentor through the Foundation’s Research and Summer Internship Programs, including the Mini-Med School program, which provides 15 high school students the opportunity to participate in an orthopedic workshop.

Dr. Vadasdi is the designated team doctor for Greenwich Academy, Greenwich High School, Iona Preparatory School, Trinity Catholic High School and Convent of the Sacred Heart. She is a frequent guest speaker for local organizations, parent groups and at medical conferences. She participates on a number of committees and boards, including the Greenwich Hospital Women’s Health Initiative Board of Directors and the Hospital’s Peer Review Board.

Dr. Vadasdi’s area of medical specialty reflects her personal interests.  She is an accomplished triathlete, having completed Ironman competitions in 2007 and 2009. Dr. Vadasdi is also an alpine climber who has ascended Mount Kilimanjaro, Mount Rainier and the Grand Teton, among others.

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Testimonials

From the moment I walked in the ONS door with my broken right patella, I knew I was in the right place!  I was most fortunate to be referred to Dr. Vadasdi by two of her former patients. I immediately felt comfortable as she is an Ironwoman Triathlete and I am a 3 time Ironman.

The entire ONS group, from surgery to PT, has turned a most difficult situation into a pleasant one.  I am always greeted with a warm smile and never wait more than five minutes.  The staff at ONS took care of ALL my health insurance needs leaving me with my sole responsibility of showing up on time. I would highly recommend ONS to anyone in need of orthopedic care or PT. They are simply the best. This is from the heart as I am soooo grateful for ONS taking good care of me!! (patient S.W.)

Dr. Vadasdi was wonderful. She performed two surgeries, the first to find out what was wrong with a repair conducted by another surgeon, and a second to then fix the problem. She also thought to collect tissue samples during her first surgery, then finding that I had an infection that required 6 weeks of daily antibiotic infusion. I am now 100% healthy and back to normal routines, including yoga (at age 68!) (comment from RateMD)

My experience was fantastic! Dr. Vadasdi was incredible. She did a great job on my shoulder. I strongly recommend that anyone who is facing shoulder surgery to use Dr. Vadasdi.

I have had shoulder surgery before and Dr. Vadasdi is the best and so is the ONS staff! (Patient Review)

I find Dr. Vadasdi to be a genius and compassionate doctor. Her care of me as her patient was outstanding! (Patient Survey)

I have been coming here for at least 15 years and have seen a variety of amazing doctors … Dr. Greene being a favorite in our household for years and would trust him with everything.  Recently I broke my elbow and was sent to Dr. Vadasdi.  She was amazing! Great with surgery and aftercare. Very compassionate throughout the whole process! Thank you ONS for getting me through everything! (E.D.)

Dr. Vadasdi: It’s been over a year now since my elbow surgery and I’m back in full swing. Literally! My golf swing- I had my best season to date (over 45 rounds) and achieved my lowest handicap score of 10.8. I can’t thank you enough for applying your surgical skills in repairing my elbow. With PT my recovery was smooth and quick. I was back up and running in just a few months. I feel better and stronger than ever. Your staff from start to finish was professional and compassionate. Thank you. (D.T.)

 

Dear Dr. Vadasdi – I neglected to tell you today how much I appreciated the excellent rebuild of my shoulder.  You are obviously very talented as my recovery demonstrates. I recommend you to everyone! Thanks again for your time, concern, and operating skills. Have a great New Year!  (CS)

 

Dr. Vadasdi– I was given great information prior to and post surgery. The staff and Dr. Vadasdi were very responsive.  I was very pleased with all aspects of the experience. (Anonymous)

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