Francis Y. Lee, MD, PhD, is an orthopaedic surgeon with extensive expertise treating both adults and children. Committed to providing care of the highest quality, Dr. Lee works with a range of musculoskeletal problems, from fractures and limb deformities to musculoskeletal tumors and infections. He is an expert in complex musculoskeletal reconstruction.
A professor in the Department of Orthopaedics & Rehabilitation at Yale School of Medicine, Dr. Lee has a secondary appointment in the Department of Pathology. He holds the rare distinction of being both an orthopaedic surgeon and a musculoskeletal scientist scholar working with National Institutes of Health (NIH) research programs. Dr. Lee conducts extensive research into such areas as fracture healing and bone metastasis. Dr. Lee has been a pioneer in developing minimally invasive Ablation-Osteoplasty-Reinforcement-Internal Fixation (AORIF) that is specially designed for patients with cancer that has spread to bone. This paradigm-shifting ambulatory procedure provides local cancer control, decreases pain, and improves ambulatory function.
Dr. Lee says he especially enjoys interacting with patients and their families. He draws upon his research background to approach each case with a sense of discovery and innovation. “I will provide care for you and your family as if I were treating my own family members and friends,” he says.
Dr. Lee also serves as a Presidential Line Officer (2022-2023: Treasurer; 2023-2034: Secretary; 2024-2025: President-Elect; 2025-2026: President) for the Musculoskeletal Tumor Society, a premier professional organization for musculoskeletal tumor surgeons.

Adjunct Clinical Assistant Professor, Orthopaedic Surgery, Weill Cornell Medical College, Cornell University, New York, New York
Clinical Professor, Department of Orthopaedic Surgery, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, New York
Fellowship Director & DIO, Sports Medicine Fellowship (ACGME accredited 2008, recognized by AANA and AOSSM), Plancher Orthopaedics & Sports Medicine, New York, New York
Fellowship Director, Shoulder Fellowship (ASES approved 2021), Plancher Shoulder & Elbow Surgery, New York, New York

Professor (by Courtesy) of Mechanical and Aerospace Engineering, University of Florida
Affiliate Professor of Orthopaedics and Sports Medicine, University of Florida
Affiliate Professor of Biomedical Engineering, University of Florida

Michigan State University School of Human Medicine Clinical Assistant Professor

Henry Ford Health Systems, Residency Associate Program Director, Department of Orthopaedic Surgery

Henry Ford Health Systems, Chief, Shoulder and Elbow Service

Wayne State University School of Medicine Clinical Assistant Professor

Since 2017 Head of the Surgical Teaching Center of the DVSE at the OCM
Clinic
Since 2021 “Focus” Top Doctor for Shoulder & Elbow Surgery
Since 2021 Head of the Surgical Teaching Center of SECEC at the OCM
Clinic
Since 2021 Head of Arthrex Surgical Observation Program at the OCM
Clinic
Since 2021 Member of Arthrex ShARC Committee
Since 2023 Head of Hosting Center for Intra-European Travelling Fellows
of SECEC (in 2023 Dr. Natalia Martinez Catalan & Dr. Gokhan
Karademir)
Since 2023 Head of Hosting Center for ASES/ SECEC Travelling Fellows
(in 2023 Dr. Jon Barlow & Dr. Peter Chalmers)

Matthias Zumstein is a renowned specialist in surgical orthopedics and traumatology. He completed his medical training at the University of Bern, obtaining his doctorate degree. In 2017, he was appointed as a professor.
Currently, Matthias Zumstein leads the team for shoulder, elbow, and sports orthopedics at Orthopädie Sonnenhof in Bern and at Sportclinic #1. In addition to his role as a professor at the University of Bern, he also serves as an Honorary Professor at Macquarie University in Sydney, Australia.
He underwent specialized training in shoulder, elbow, and sports orthopedics in Zurich and Bern. Furthermore, he completed clinical and scientific fellowships in shoulder orthopedics and sports orthopedics at the University Hospital in Nice, France, as well as in elbow and wrist surgery at the University Hospital in Adelaide, Australia.
Matthias Zumstein is an active member of the Swiss Society of Orthopedics and Traumatology (swiss orthopaedics) and has chaired this organisation since July 2024. Additionally, he served as a board member of the European Society for Shoulder and Elbow Surgery (SECEC/ESSSE) for many years.

Orthopedic Surgeon in Istanbul University Medical Faculty, Department of Orthopaedics and Traumatology
• ICL (2) (March 29)
Arthroscopic Latarjet- the importance of remplissage

Professor of Orthopaedic Surgery and Traumatology, Acibadem University Medical Faculty

Expertise : Hand and Upper Extremity Surgery include Shoulder
Advanced Arthroscopic Shoulder Surgery
Arthroscopic Elbow and Wrist Surgery

Orthopedics and Traumatology attending surgeon, Acıbadem Hospital, Department of Orthopedic Surgery and Traumatology

Shoulder and Elbow Consultant in Acibadem Maslak Hospital, Istanbul
Professor in Dept of Orthopaedics and Traumatology of Acibadem University, Medical Faculty
Chair, Shoulder and Elbow Department in Acibadem Maslak Hospital, Istanbul

Professor at Acibadem MAA University Faculty of Medicine, Department of Orthopedics and Traumatology
Team Physician of Turkish Basketball Team (Senior team)

Acibadem University, Acibadem Fulya Hospital Orthopaedics & Traumatology Department, Istanbul

Professor, Department of Orthopedics and Traumatology, School of Medicine, Koç University

Clinical Professor, Ufuk University, Faculty of Medicine, Dept. Orthopaedic Surg. & Traumatology, Division of Hand and Upper Extremity Surgery

Professor, Dokuz Eylül University School of Medicine Dept of Orthopaedics

Associate Professor, Bilecik Şeyh Edebali University

Professor of Orthopedics and Traumatology
Consultant in Orthopedics in Acibadem Eskisehir Hospital
Current President of Turkish Society of Shoulder and Elbow Surgery

Dr. Ayyappan V Nair specialize in shoulder surgery, sports trauma and arthroscopy, and is a consultant at Manipal group of hospitals, with consultation at three hospitals – Whitefield, Surjapur and Jayanagar. Prior to this he has headed the division of shoulder surgery and arthroscopy at Sparsh hospital Bangalore from 2017 to 2018. During this period he has collaborated with different football clubs and sports centers and actively been part of treatment of sports injuries of football players and actively contributed to Karnataka football association. His main area of specialization is advanced shoulder surgeries. He has extensively trained in shoulder surgery and joint replacement, and have been part of the prestigious Joint division at Amrita Institute where we tackle the entire spectrum of arthroplasty and scopy surgeries. He was one of the first surgeons from India to be trained in Robotic joint replacement, at the Stryker Institute, USA. He continues to be involved in clinical research with the most recent publication in the prestigious journal of Arthroscopy. He has organized several conferences including the AMRITA TRAUMACON-2013,2014,2015 and AMRITA SHOULDERCON 2014 and the first MANIPAL INTERNATIONAL SHOULDER- 2022 CONFERNCE. He is a keen supporter of teaching and postgraduate training.

Clinical Instructor, Department of Orthopaedic Surgery, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand

Chief of Sports Medicine & Shoulder Unit, Department of Orthopaedics
Sports Medicine and Shoulder Section, Phramongkutklao Hospital & College of Medicine
Consultation of Sports Authority of Thailand

Education and Training

1984-1989 Bachelor’s Degree, Henan Medical University, Zhengzhou, China
1989-1995 M.D., Graduate School, Shanghai Medical University, Shanghai, China
1996-1997 Residency
1998-2000 Attending Surgeon
2000-2005 Deputy Chief Surgeon
2006~ Chief Surgeon, Department of Sports Medicine, Shanghai Sixth People’s Hospital, Shanghai, China

Dr. Zhao has worked as an orthopedic doctor for more than 20 years, he has abundant experience in the field of shoulder surgery such as arthroscopic rotator cuff repair, superior capsular reconstruction, Bankart repair, Remplissage tendon filling, Arthroscopic Glenoid iliac crest bone grafting, Latarjet surgery, as well as shoulder arthroplasty and reverse shoulder arthroplasty. He carries out more than 500 shoulder surgeries and 300 knee surgeries per year. He is an expert of knee arthroscopy and knee arthroplasty and joint revision also. He shared his experience in more than 25 important symposium and courses of China, Hong Kong, Korea etc. He won the opportunity of Travelling Fellow 2019 of ASES. He has the Unique technique of Arthroscopic Ilia crest bone graft for glenoid using double button non-rigid fixation for treatment of recurrent shoulder dislocation.

1998-2005 Resident Orthopaedic Dept.
2005-2010 Attending of Orthopaedic Dept.
2010-2016 Associate Chief Physician of Orthopaedic Dept.
2016~ Chief Physician of Orthopaedic Dept., Affiliated Hospital of Nanjing University of Chinese Medicine
2017~ Supervisor of Postgraduate, Nanjing Sport Institute
2017~ Deputy Head of Orthopaedic Dept. and Director of Sports Medicine
2021~ Head of the Surgical Dept. of Zidong Branch, Deputy Head of Orthopaedic Dept., Affiliated Hospital of Nanjing University of Chinese Medicine
2022~ Supervisor of Postgraduate, Nanjing University of Chinese Medicine
2022~ Vice President of Zidong Branch, Affiliated Hospital of Nanjing University of Chinese Medicine

Adjunct Associate Professor, School of Mechanical and Aerospace Engineering, Nanyang Technological University, since Sept 2006

Adjunct Associate Professor, DUKE-NUS Graduate Medical School, from 1 Jan 2021 and Orthopaedic Dept Co-ordinator MSK Programme

Adjunct Associate Professor in Faculty of Medicine, National University of Singapore (YLL-NUS), from Jun 2021

Adjunct Associate Professor, Lee Kong Chian School of Medicine, from 1 Apr 2024

Program Director, SingHealth Orthopaedic Residency Program, from 2022

Senior Consultant, Singhealth-Duke Global Health Institute, since 2022

Singhealth Research Enabler Lead, Biomechanics, and Director of CTBioE and REBEL Biomechanics Labs, since 2024

Chairman, Department of Orthopaedics, University of Santo Tomas Hospital
Director, University of Santo Tomas Hospital Orthopaedic Learning Center
Associate Professor in Orthopedic Surgery, Faculty of Medicine and Surgery, University of Santo Tomas
Fellow, Philippine Orthopedic Association, Philippine College of Surgeons
Diplomate, Philippine Board of Orthopedics
Master of Health Professions Education, University of the Philippines National Teacher Training Center in Health
Active Consultant, University of Santo Tomas Hospital, Cardinal Santos Medical Center, and St. Luke’s Medical Center Global City

1985.4 ~ 1991.3 M.D., Hiroshima University School of Medicine
1998.4 ~ 2002.3 Ph.D. , Hiroshima University School of Medicine Work Experience
1991.4-1992.3 Hiroshima University Hospital
1992.4-1994.3 Mazda Hospital, Mazda Motor Corporation
1994.4-1996.3 Yoshida General Hospital, Health Federation
1996.4-1998.3 Hiroshima Prefectural Rehabilitation Center
2002.4-2007.9 Matsuyama Red Cross Hospital
2007.10-2007.9 Mazda Hospital, Mazda Motor Corporation

1988-1994 Showa University School of Medicine
1994 M.D.
1999 Ph.D., Showa University School of Medicine
2005-2007 Research Fellow, Orthopaedic Biomechanics Lab Mechanical & Aerospace Engineering, University of Florida, FL, USA

1994-2008 Orthopaedic Clinical Research Fellow, Shoulder & Elbow Service Department of Orthopaedic Surgery, Showa University Fujigaoka Hospital
2012 Assistant Professor, Shoulder & Elbow Service Department of Orthopaedic Surgery, Showa University Fujigaoka Hospital
2016 Assistant Professor, Showa University Research Institute for Sport and Exercise Sciences
2019 Professor, Department of Physical Therapy, School of Nursing and Rehabilitation Sciences

Vice-President, University Hospital, Professor & Chairman, Department of Orthopaedic Surgery, Shiga University of Medical Science (SUMS)

Guest Professor, Osaka Univ. Graduate School of Engineering
Honorary professor, Osaka Univ. Graduate School of Medicine, Dept. of Orthopedic Biomaterial Science

Director, Department of Orthopaedics and Rehabilitation, Marutamachi Rehabilitation Clinic
Clinical Professor, Department of Orthopedics, Kyoto Prefectural University of Medicine

Vice director in Kumamoto Orthopedic Hospital, Head of Shoulder Department
Director of Japanese Shoulder Society

Chief of Orthopaedic Surgery, Tokyo Kita Medical Center, Shoulder Center