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Andreas Kontaxis, PhD



Dr. Andreas Kontaxis aims to develop world-class products and services that can improve quality of life for patients with painful musculoskeletal and neurological disorders, especially in the upper extremity. His long collaboration with experienced surgeons has inspired him to use research tools, like biomechanical models, to explore and answer challenging clinical questions and create applications that assist the physicians and physiotherapists to optimize clinical outcomes and rehabilitation.

His work involves the development of state-of-the-art biomechanical modeling and kinematics analysis of the shoulder and upper extremity. As a research scientist, he has worked in many individual and international collaborative research programs. He has also published extended work in the development of motion analysis protocols for the shoulder as well as in shoulder joint replacement, with research ranging from osteoarthritis in geriatrics to risk of injury in young athletes.



Assistant Scientist, Hospital for Special Surgery


Invited Lecture in the 13th International Congress of Shoulder and Elbow Surgery (ICSES 2016), Jeju, Korea, in specialty session: How to Prevent and to Deal with the Main Complications of Total and Reverse Shoulder Arthroplasties? 2016

The Orthopaedic Research and Education Foundation award in Prevention of Youth Sports Injuries Grant for the research proposal: Non-surgical treatment in young pitchers to improve shoulder kinematics. 2016

Best of the ORS poster award in the Shoulder and Elbow category in the annual 'Orthopaedic Society Research' meeting 2016: Bone Quality Variations in Osteoarthritic B2 Glenoid Following Eccentric Reaming during Total Shoulder Arthroplasty. Orlando, 2016

Neer Award nomination on the American Shoulder and Elbow Society (ASES) 2016 meeting for research abstract #9718: Humeral Component Version in Reverse Shoulder Arthroplasty Affects Impingement in Activities of Daily Living. 2015

Invited Special Tutorial in the 2015 Annual Gait and Clinical Movement Analysis (GCMAS) conference: Quantitative Clinical and Biomechanical Analysis of Upper Extremity Movement Dysfunction. Aviva Wolff, OTR, CHT, EdD(c), Andreas Kontaxis, PhD, 2015

Elsevier Recognized Journal Reviewer certificate, 2015

Invited presentation in the 25th Congress of the International Society of Biomechanics (Glasgow, UK) in the Upper Limb Special Session: What can we learn from sport? Proposal of an ulnar sensor to avoid soft-tissue artefacts. 2015

BEEA, British Engineering Excellence Award for mechanical product based on patented design. G.R. Johnson, A. Kontaxis, A.Wallace. 2010



Publications by

Selected Journal Articles

Kontaxis A, Chen X, Berhouet J, Choi DS, Wright TM, Dines DM, Warren RF, Gulotta LV. Humeral version in reverse shoulder arthroplasty affects impingement in activities of daily living. Journal of Shoulder and Elbow Surgery. Accepted for publication: 11/25/2016, doi:10.1016/j.jse.2016.11.052

Berhouet J, Gulotta LV, Dines DM, Craig E, Warren RF, Choi DS, Chen X, Kontaxis A. Pre-operative planning for accuracy of glenoid component placement in reverse shoulder arthroplasty', Journal Orthopaedics & Traumatology: Surgery & Research, Accepted for publication November 11/10/2016

Kung SM, Shultz SP, Kraszewski AP, Kontaxis A, Gibbons MW, Backus SI, Fink PW, Hillstrom HJ, Fealy S. Changes in lower extremity kinematics and temporal parameters of adolescent baseball pitchers during an extended pitching bout. The American Journal of Sports Medicine. Accepted for publication October 04, 2016

Gausden EB, McCarthy MM, Kontaxis A, Corpus KT, Gulotta LV, Kelly AM., 'Subscapularis tendon loading during activities of daily living.', J Shoulder Elbow Surg. 2016 Oct 5. pii: S1058-2746(16)30240-3. doi: 10.1016/j.jse.2016.07.013. [Epub ahead of print], PMID: 27720415

Berhouet J, Kontaxis A, Gulotta L, Craig E, Warren RF, Dines J, Dines DM, Effects of the humeral tray component positioning for onlay reverse shoulder arthroplasty design: a biomechanical analysis., J Shoulder Elbow Surg. 2014 Nov 6. pii: S1058-2746(14)00521-7

Berton A, Gulotta LV, Petrillo S, Florio P, Longo UG, Denaro V, Kontaxis A. The effect of humeral version on teres minor muscle moment arm, length, and impingement in reverse shoulder arthroplasty during activities of daily living. J Shoulder Elbow Surg. 2014 Oct 25. pii: S1058-2746(14)00492-3.

Costantini O, Choi DS, Kontaxis A, Gulotta LV. The effects of progressive lateralization of the joint center of rotation of reverse total shoulder implants. Accepted for publication in Journal of Shoulder and Elbow Surgery, November 15, 2014

Weber AE, Kontaxis A, O'Brien SJ, Bedi A. (2014). The biomechanics of throwing: simplified and cogent., Sports Med Arthrosc. 2014 Jun;22(2):72-9.

Parel I, Cutti AG, Kraszewski A, Verni G, Hillstrom H, Kontaxis A. Intra-protocol repeatability and inter-protocol agreement for the analysis of scapulo-humeral coordination, Med Biol Eng Comput. 2014 Mar;52(3):271-82.

Kontaxis A, Cutti AG, Johnson GR, Veeger HE. A framework for the definition of standardized protocols for measuring upper-extremity kinematics.‖, Clinical Biomechanics, Mar 2009, 24(3): 246-53

Kontaxis A, Johnson GR, The biomechanics of reverse anatomy shoulder replacement - A modelling study." Clinical Biomechanics, Mar 2009, 24 (3): 254-60

Selected Books/Chapters

"Reverse Shoulder Arthroplasty" in Biomechanics of the Reverse Total Shoulder Replacement: The Hospital for Special Surgery Perspective. Oren Costantini, Andreas Kontaxis, Lawrence V. Gulotta. Editors: Mark Frankle, Scott Marberry, Derek Pupello, ISBN 9783319208404 • 9783319208398, pp 97-104, 10/21/2015

Selected Presentations

Neutral Humeral version in Reverse Shoulder Arthroplasty can reduce Impingement in Activities of Daily Living, Chen X, Kontaxis A, Choi D, Berhouet J, Wright TM, Dines D, Craig E, Warren R, Gulotta L. American Academy of Orthopaedic Academy Annual Meeting (AAOS) 2016 Orlando, Fl

Pre-Operative Planning and Patient Specific Guides Can Improve Functional Outcomes in Reverse Shoulder Arthroplasty; A Biomechanical Study, Andreas Kontaxis, Julien Berhouet, Daniel Choi, Chen Xiang, Lawrence Gulotta, International Congress of Shoulder and Elbow Surgery (ICSES) 2016 Jeju, Korea

Bone Quality Variations in Osteoarthritic B2 Glenoid Following Eccentric Reaming during Total Shoulder Arthroplasty Akhil Reddy, Xiang Chen, Andreas Kontaxis, Daniel Choi, David Dines, Russel Warren, Lawrence Gulotta Orthopaedic Research Society (ORS) Annual Meeting, 2016 Orlando, Florida

Lateralize the joint center of rotation in reverse shoulder arthroplasty increases glenoid component micro motions Xiang Chen, Andreas Kontaxis, Daniel Choi, Lawrence Gulotta Orthopaedic Research Society (ORS) Annual Meeting, 2016 Orlando, Florida

Glenoid placement in reverse shoulder arthroplasty; Comparison of 3D-interactive and traditional methods, Julien Berhouet, Andreas Kontaxis, Timothy Wright, Daniel Choi, Oren Costantini, Lawrence Gulotta American Academy of Orthopaedic Academy Annual Meeting (AAOS) 2015 Las Vegas

Biomechanical Comparison of Three Latissimus Dorsi Transfer Sites for Reverse Shoulder Arthroplasty, Jade A. Anderson, Oren Costantini, Stefano Petrillo, Daniel Choi, Lawrence V. Gulotta, Andreas Kontaxis, American Academy of Orthopaedic Academy Annual Meeting (AAOS) 2015 Las Vegas

Effect of Fatigue on High School Baseball Pitchers A.Kontaxis, A. Kraszewski, M. Gibbons, S. Backus, H. Hillstrom Annual Conference of the Gait and Clinical Movement Analysis (GCMAS) 2015 Portland, Oregon

Accuracy of pre-operative planning in Reverse Shoulder Arthroplasty Andreas Kontaxis, Julien Berhout, Daniel Choi, Chen Xiang, Lawrence Gulotta International Society of Biomechanics (ISB) Congress, 2015 Glasgow, UK

The Effect Of The Humeral Tray Component Positioning for Onlay Reverse Shoulder Arthroplasty Designs Julien Berhouet, Lawrence Gulotta, Daniel Choi, Andreas Kontaxis, Orthopaedic Research Society (ORS) Annual Meeting, 2015 Las Vegas, Nevada

The Effect of Pitch Count on Shoulder Kinematics and Strength in Adolescent Baseball Pitchers Jennifer Bido, Mandi W. Gibbons, Andrew Kraszewski, Jocelyn F. Hafer, Jessica Graziano, Michael Levinson, Sherry I. Backus, Howard J. Hillstrom, Andreas Kontaxis, Stephen Fealy, American Shoulder and Elbow Surgeons Specialty Day Meeting (ASES) 2014 New Orleans, Louisiana

Industry Relationships

Industry Relationships

One of the goals of HSS is to advance the science of orthopedic surgery, rheumatology, and related disciplines for the benefit of patients. Research staff at HSS may collaborate with outside companies for education, research and medical advances. HSS supports this collaboration in order to foster medical breakthroughs; however, HSS also believes that these collaborations must be disclosed.

As part of the disclosure process, this website lists Research staff collaborations with outside companies if the Research staff member received any payment during the prior year or expects to receive any payment in the next year. The disclosures are based on information provided by the Research staff and other sources and are updated regularly. Current ownership interests and leadership positions are also listed. Further information may be available on individual company websites.

As of May 31, 2023, Dr. Kontaxis reported no relationships with healthcare industry.

By disclosing the collaborations of HSS Research staff with industry on this website, HSS and its Research staff make this information available to patients and the public, thus creating a transparent environment for those who are interested in this information. Further, the HSS Conflicts of Interest Policy does not permit payment of royalties on products developed by him/her that are used on patients at HSS.