About Bassem Elhassan, MD

Dr. Bassem Elhassan is a world-renowned shoulder, elbow and hand surgeon who performs surgery from the simple to the complex. From arthroscopy to arthroplasty to procedures he has invented himself, Dr. Elhassan focuses on exceptional patient care and getting his patients back to the things they love.

Dr. Elhassan joined Massachusetts General Hospital in October 2020. Before coming here, he was on the faculty at the Mayo Clinic and was a Professor of Orthopaedic Surgery at Mayo Clinic College of Medicine.

Dr. Elhassan received his medical degree at the American University of Beirut. He completed three years of training in general surgery focusing on cardiothoracic surgery and one year in orthopaedic surgery at the American University of Beirut. Dr. Elhassan went on to complete his residency in orthopaedic surgery at the University of Illinois in Chicago. While there, he received the Senior Alpha Omega Alpha Honor Medical Society, as well as the Robert Ray Award for Research. Dr. Elhassan completed a fellowship in hand and upper extremity at the Mayo Clinic and an additional fellowship in shoulder and elbow surgery at Mass General.

Dr. Elhassan started working at the Mayo Clinic in of 2007. He won the Mayo Clinic Teacher of the Year Award for two consecutive years in 2009 and 2010, and his upper extremity service was voted as one of the best rotations for the Mayo Clinic’s residents and fellows.

Dr. Elhassan has been innovative in the field of upper extremity surgery and he has developed numerous novel procedures (20 new surgical procedures for the shoulder, elbow and wrist) through dedicated anatomic and biomechanical studies. The care and outcome of patients, specifically those with complex shoulder and elbow problems, improved significantly because of these innovations. He is considered the world expert in the evaluation and management of scapulothoracic disorders, and tendon transfers around the shoulder and elbow.

Dr. Elhassan has published over 125 peer-reviewed articles and authored thirty book chapters. He has presented at countless meetings both nationally, as well as internationally, and he has won numerous awards for best abstract, paper, poster, video and podium presentation in national and international hand and shoulder and elbow societies. He is also the recipient of the 2015 ASES Traveling Fellowship Exchange Program.

Departments, Centers, & Programs:

Clinical Interests:




Orthopaedic Associates
55 Fruit Street
Yawkey Building, Suite 3G
Boston, MA 02114
Phone: 617-724-7300

Medical Education

  • MD, American University of Beirut
  • Residency, University of Illinois at Chicago
  • Fellowship, Massachusetts General Hospital
  • Fellowship, Mayo Clinic Foundation

American Board Certifications

  • Orthopaedic Surgery, American Board of Orthopedic Surgery
  • Hand Surgery, American Board of Orthopaedic Surgery
  • Hand Surgery, American Board of Orthopaedic Surgery
  • Hand Surgery, American Board of Orthopaedic Surgery

Accepted Insurance Plans

Note: This provider may accept more insurance plans than shown; please call the practice to find out if your plan is accepted.


Dr. Elhassan's main research is focused on understanding the anatomy and biomechanics of the shoulder. He was able, with the help of his colleagues, to create a state-of-the-art shoulder model on which he conducts his studies. This model has helped in evaluating the kinematic of the scapula and the scapulothoracic articulation. In addition, it helped determine the effectiveness of different muscle transfers to reconstruct the deficient rotator cuff, in native shoulders, as well as in shoulders with reverse shoulder arthroplasty.


  • View my most recent publications at PubMed

    Select publications:

    • Kakar S, Noureldin M, Elhassan B. Ulnar head replacement and sigmoid notch resurfacing arthroplasty with a lateral meniscal allograft: 'calamari procedure'. J Hand Surg Eur Vol. 2017 Jul; 42 (6):567-572.
    • Willemot LB, Elhassan BT, Verborgt O. Bony Reconstruction of the Anterior Glenoid Rim. J Am Acad Orthop Surg. 2018 May 15; 26 (10):e207-e218.
    • Burnier M, Elhassan BT, Sanchez-Sotelo J. Surgical Management of Irreparable Rotator Cuff Tears: What Works, What Does Not, and What Is Coming. J Bone Joint Surg Am. 2019 Sep 4; 101 (17):1603-1612.
    • Reif T, Schoch B, Spiguel A, Elhassan B, Wright T, Sanchez-Sotelo J, Wilke BK. A retrospective review of revision proximal humeral allograft-prosthetic composite procedures: an analysis of proximal humeral bone stock restoration. J Shoulder Elbow Surg. 2020 Jul; 29 (7):1353-1358.
    • Elhassan BT, Wagner ER, Kany J. Latissimus dorsi transfer for irreparable subscapularis tear. J Shoulder Elbow Surg. 2020 Oct; 29 (10):2128-2134.
    • Elhassan BT, Sanchez-Sotelo J, Wagner ER. Outcome of arthroscopically assisted lower trapezius transfer to reconstruct massive irreparable posterior-superior rotator cuff tears. J Shoulder Elbow Surg. 2020 Oct; 29 (10):2135-2142.