> Skip repeated content
photo of William J. Long, MD, FRCSC

William J. Long, MD, FRCSC

Hip and Knee Replacement Surgeon
phone icon

About Dr. Long


Dr. William J. Long is a board certified Associate Attending Orthopedic Surgeon at HSS specializing in adult hip and knee reconstruction, revision joint replacements and sports injuries of the knee. 

He is a member of a number of prestigious societies including the Knee Society, where he is on the Research Committee, and the Hip Society. He is a board member, and Knee Society representative, on the American Joint Replacement Registry Steering Committee. He serves on a number of internal committees at HSS, and is the Chairman of the Business and Strategic Growth Committee in the ARJR Division.

As an expert in advanced technology, Dr. Long has helped to design and introduce two robotic platforms to market, both of which aid surgeons in better performing total knee replacements.

Dr. Long previously served as an attending orthopedic surgeon at the Insall Scott Kelly Institute for Orthopaedics and Sports Medicine in New York City. He was also a clinical associate professor at NYU Langone Orthopaedic Hospital and assistant program director of the ISK/NYU Adult Reconstruction Fellowship, as well as former director of research at St. Francis Hospital in Roslyn, New York. He directed and ran the ISK Annual meeting in New York for 10 years. He received several recognitions, including the Dr. Jaffe Fellow Research Award 5 consecutive years at NYU, and received the teaching award.

After completing his undergraduate degree at Queen’s University at Kingston, in Ontario, Canada, Dr. Long received his medical degree from the University of Western Ontario. He completed a residency in orthopedic surgery, also at Queen’s University, a fellowship in lower extremity adult reconstruction at the Mayo Clinic, and a second fellowship in sports medicine and reconstruction at the Insall Scott Kelly Institute. More recently he completed the Harvard Surgical Leadership Program and won the Clinical Change Team Award.

The author of more than 100 peer-reviewed papers in the last decade, Dr. Long is also editor and author of a number of textbooks on hip and knee reconstruction. He is an invited speaker at numerous national and international meetings on an annual basis.

Dr. Long is the recipient of the 2019 Frank Stinchfield Award from the Hip Society, as well as the first-ever Tri-Org 


Special Expertise

Adult hip and knee reconstruction
Knee sports medicine
Revision joint replacements


Adult hip and knee reconstruction
Revision joint replacements
Sports medicine and reconstruction of the knee

Patient ratings for Dr. Long


Learn more about our patient ratings.


If your insurance is not listed, please call our office if you have questions regarding your insurance coverage. If you have out-of-network benefits, then your insurance may reimburse you for a portion of your office visit. We will work with you and your insurance to minimize your out-of-pocket costs. Financial assistance may be available for patients in need.



Associate Attending Orthopedic Surgeon, Hospital for Special Surgery
Associate Professor of Clinical Orthopedic Surgery, Weill Cornell Medical College
Associate Attending Orthopedic Surgeon, NewYork-Presbyterian Hospital


Fellow AAOS
Fellow Royal College of Physicians and Surgeons of Canada
Member AAHKS


American Board of Orthopaedic Surgery


Frank Stinchfield Award from the Hip Society 2019
FARE Grant Award AAHKS 2019
TriOrg Grant AAHKS, Hip Society, Knee Society 2019
Bill Jaffe Award best paper 2016-2020


Medical: University of Western Ontario, Canada, 2000
Internship: Queens University at Kingston General Hospital, Canada, 2001
Residency: Queens University at Kingston General Hospital, Canada, 2000-2005
Fellowships: Mayo Clinic adult hip and knee reconstruction, 2006
ISK Institute Joint reconstruction and sports medicine, 2007

State Licensure


English, French

For My Patients

Publications by Dr. Long

Patient Education

Selected Journal Articles

Selected Books/Chapters

Garceau S, Long WJ, Schwarzkopf R. Patellofemoral Arthroplasty. Essentials of Cemented Knee Arthroplasty.
Springer 2020.

Greenbaum S, Old A, Long WJ Scott WN. Special Considerations in Primary Total Knee Arthroplasty. Chapter 11. Orthopaedic Knowledge Update Hip and Knee Reconstruction 6. 2019.

Long WJ, Scuderi GR. Fixed Varus and Valgus Deformities. In: Master Techniques in Knee Surgery: Knee
Arthroplasty. Pagnano M, Hanssen AD eds. Chapter 2018.

Knee Society Virtual Fellowship 2017: Long WJ, Dia A. Total Knee Arthroplasty with Conventional Instrumentation.

Kim KY, Anoushiravani AA, Long WJ, Iorio R. Management of Post-Traumatic Arthritis.

Textbook Senior Section Editor: Primary and Revision Total Knee Arthroplasty. The Knee: Insall Scott 6th Edition.

Long WJ et al. Clinical Examination of the Knee. Chapter 3 in The Knee: Insall Scott 6th Edition.

Long WJ et al. Posterior Cruciate Substituting Total Knee Arthoplasty. Chapter 142 in The Knee: Insall Scott 6th

Long WJ et al. Surgical Approaches in Total Knee Arthoplasty. Chapter 151 in The Knee: Insall Scott 6th Edition.

Long WJ et al. Robotic Unicompartmental Knee Arthroplasty. Chapter 165 in The Knee: Insall Scott 6th Edition.

Textbook Editor: Atlas of Revision Hip and Knee Arthroplasty. Scuderi, Long, Tria, Kang eds. Elsevier. 2014.

Selected Presentations

AAHKS Dallas November, 2020. Podium Presentation. "Do TJA PJI organism profiles change with vancomycin powder and dilute povidone-iodine lavage?"

European Knee Society Virtual Meeting September 2020. Guest speaker: Active robotic total knee arthroplasty

AAOS Virtual Meeting March 2020. Poster Presentations. Differences in Hospital Consumer Assessment of Healthcare Providers and Systems (HCAHPS) Scores for a SingleSurgeon Comparing Two Institutions

Annual International Meeting "Vreden Readings", St. Petersburg, Russia. September 2019. Invited Faculty Symposium: Global Trends in Knee Arthroplasty: US Perspective

Indian Arthroplasty Association (IAACON) Mumbai, India. September 2019. Invited Faculty: Active Robotic Total Knee Replacement

Ecuadorian Orthopaedic Society Meeting, Guayaquil, Ecuador. July 2019. Guest speaker: Instability in THA: The Hip-spine Relationship

European Knee Society. Valencia, Spain. May 2019. Speaker: Stiffness in TKA and Revision Total Knee Replacement

Masterclass in Arthroplasty Surgery Thessaloniki, Greece December 2018. Invited International Faculty. Speaker: The Valgus Knee (video). Speaker: Mesh extensor reconstruction in Revision TKA (video)

COA/ICJR Xiamen, China November 2018. Invited Faculty: Who Should We operate on in TJA?

Course Director 2010-2018: ISK Annual Meeting and Transaltlantic Orthopaedic Congress ICJR, New York, NY


Research Interests

Adult hip and knee reconstruction.
Robotic and robotic assisted joint replacements.
Revision joint replacements
Machine learning
Infection prevention strategies in primary and revision joint replacements.
Ethics in joint replacements.
Fellowship education and joint replacement outcomes
Patient related outcome scores following total joint replacements
Population demographics and the delivery of joint replacement care

Industry Relationships

Industry Relationships

HSS has a long history of supporting appropriate relationships with industry because they advance HSS's mission to provide the highest quality patient care, improve patient mobility, and enhance the quality of life for all, and to advance the science of orthopedic surgery, rheumatology, and their related disciplines through research and education.

Below are the healthcare industry relationships reported by Dr. Long as of March 13, 2024.

  • CeramTec- Consultant
  • Depuy Synthes- Consultant
  • Elsevier, Inc- Author
  • HS2, LLC- Ownership Interest
  • HSS ASC Development Network, LLC- Ownership Interest
  • KCI,USA- Consultant
  • Microport- Consultant
  • Ortho Development Corp- Royalties
  • Total Joint Orthopedics- Consultant
  • Zimmer Biomet- Consultant


HSS and its physicians 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 and Commitment Policy prohibits physicians from collecting royalties on products they develop that are used on patients at HSS.

Patients should feel free to ask their HSS physicians questions about these relationships.