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Dr. McLawhorn headshot

Alexander S. McLawhorn, MD, MBA

Hip and Knee Replacement
Dr. McLawhorn headshot

Alexander S. McLawhorn, MD, MBA

Hip and Knee Replacement

Dr. Alexander McLawhorn is a specialist in minimally invasive hip and knee replacement. He performs more than 500 joint replacements every year. He has particular expertise in robot and computer-assisted joint replacement, direct anterior total hip replacement, total and partial knee replacement, hip resurfacing, and rapid-recovery joint replacement. Dr. McLawhorn provides bespoke care to active adults who require hip and knee replacement, tailoring his care recommendations to best address his patients’ individual conditions and treatment goals.

After attending college at Yale University, Dr. McLawhorn attended medical school at Columbia University. He then completed his orthopedic surgery residency and joint replacement fellowship at Hospital for Special Surgery, where he earned multiple awards for excellence in orthopedic surgery and research.

Dr. McLawhorn believes that research, education, and leadership are central to the delivery of the highest quality, patient-centered, orthopedic care. He has authored numerous publications and presented his research nationally and internationally. He has earned multiple grants and research awards, including the prestigious Frank Stinchfield Award from the Hip Society. His current research is focused on helping other surgeons enhance the value of arthritis care that they provide to their patients.

Dr. McLawhorn holds regular office hours and provides surgical care in Manhattan and Stamford, CT.

Patient Stories


Assistant Attending Orthopedic Surgeon, Hospital for Special Surgery
Assistant Professor, Orthopedic Surgery, Weill Cornell Medical College


Specialized Centers

Special Expertise

Treatment of hip and knee arthritis in young, active patients 
Direct anterior/anterior approach hip replacement
Hip resurfacing (bone-preserving surface replacement of the hip)
Robotic joint replacement surgery
Computer-assisted surgery
Minimally invasive hip and knee replacement
Total knee replacement
Partial knee replacement
Revision hip replacement


Anterior approach hip replacement
Posterior approach hip replacement
Hip resurfacing
Robotic total hip replacement
Revision hip replacement

Total knee replacement
Partial knee replacement
Robotic total knee replacement
Robotic partial knee replacement (MAKOplasty)


Crain’s New York Business 2021 “Notable in Health Care” Honoree
EOA/OREF Resident/Fellow Travel Grant, Eastern Orthopaedic Association
Research Excellence Award, Adult Reconstruction & Joint Replacement Fellowship, Hospital for Special Surgery
Frank Stinchfield Award, The Hip Society
Health Policy Fellow, American Association of Hip and Knee Surgeons
Lewis Clark Wagner, MD, Award for Excellence in Orthopaedic Clinical/Translational Research
OREF/RJOS/DePuy Research Grant in Women's Musculoskeletal Health
Distinguished Housestaff Award, Orthopedic Surgery, New York Weill Cornell Medical Center Alumni Council
Ranawat Award, Eastern Orthopaedic Association
ICJR Pan-Pacific American/European Research Award
American Orthopaedic Association (AOA) Emerging Leaders Program
First Prize in Clinical Medicine, Medical Society of the State of New York Symposium
Richard S. Laskin Research Award
Resident/Fellow Travel Grant Award, Eastern Orthopaedic Association
AAOS/OREF/ORS Clinician Scholar Career Development Program



American Academy of Orthopaedic Surgeons
American Orthopaedic Association
Orthopaedic Research Society
American Association of Hip and Knee Surgeons
Société Internationale de Chirurgie Orthopédique et de Traumatologie
Eastern Orthopaedic Association



Insurance Information

Please do not hesitate to contact our office if you have questions regarding your insurance coverage. You may have coverage subject to the availability of 'out-of-network' benefits.

Patient ratings for Dr. McLawhorn

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. Physicians 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 physician collaborations with outside companies. The disclosures are provided by information provided by the physician and other sources and are updated regularly. Further information may be available on individual company websites.

As of December 06, 2019, Dr. McLawhorn reported no relationships with healthcare industry.

By disclosing the collaborations of HSS physicians with industry on this website, HSS and its physicians make this information available to their 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 physicians to collect royalties on products developed by him/her that are used on patients at HSS.

Dr. McLawhorn in the News


BA, Yale University
MD, Columbia University College of Physicians and Surgeons
MBA, Columbia University Graduate School of Business


Hospital for Special Surgery
NewYork-Presbyterian/Weill Cornell Medical Center


Hospital for Special Surgery - Orthopedic Surgery


Hospital for Special Surgery - Adult Reconstruction and Joint Replacement


Board Certified – American Board of Orthopaedic Surgery (ABOS)

State Licensure

Editorial Appointments

HSS Journal

Selected Books by Dr. McLawhorn

McLawhorn AS, Windsor RE. TKA After Fractures About the Knee. In Revision Total Knee Arthroplasty. Edited by Bono JV and Scott RD. [In press]

McLawhorn AS, Marx RG. Orthopaedic Research. In OKU 12: Orthopaedic Knowledge Update. American Academy of Orthopaedic Surgeons. [In press]

Burns R, Zusman NL, Cross MB, McLawhorn AS, Frank RM, Haughom BD, Sculco PK, et al. (2015). Knee Reconstruction. In Passport for the Orthopedic Boards and FRCS Examination (pp. 777-833). Springer Paris.

Selected Publications

Schairer WW, Padgett DE, Halsey D, Iorio R, Lane JM, McLawhorn AS. The Frank Stinchfield Award: Total Hip Arthroplasty for Femoral Neck Fracture Is Not A Typical DRG 470: A Propensity-Matched Cohort Study. Clin Orthop Relat Res. 2016 May 6. [Epub ahead of print] PMID: 27154530

Fu MC, D'Ambrosia C, McLawhorn AS, Schairer WW, Padgett DE, Cross MB. Malnutrition Increases With Obesity and Is a Stronger Independent Risk Factor for Postoperative Complications: A Propensity-Adjusted Analysis of Total Hip Arthroplasty Patients. J Arthroplasty. 2016 May 6.[Epub ahead of print] PMID: 27237966

Nawabi DH, Degen RM, Fields K, McLawhorn AS, Ranawat AS, Sink EL, Kelly BT. Outcomes following Arthroscopic Treatment of Femoroacetabular Impingement for Patients with Borderline Hip Dysplasia.  Am J Sports Med. 2016 Apr;44(4):1017-23. PMID: 26831630

McLawhorn AS, Southren D, Wang YC, Marx R, Dodwell E. Cost Effectiveness of Bariatric Surgery Prior to Total Knee Arthroplasty in the Morbidly Obese. J Bone Joint Surg Am 2016 Jan 20;98(2):e6. PMID: 26791039

McLawhorn AS, Levack A, Fields K, Sheha E, DelPizzo K, Sink EL. Epsilon-Aminocaproic Acid Does Not Reduce Blood Loss Associated With Periacetabular Osteotomy: A Retrospective Cohort Study. J Arthroplasty. J Arthroplasty. 2016 Mar;31(3):626-32. PMID: 26626774

McLawhorn AS, Potter HG, Cross MB, Lim W, Lee Y, Pellicci PM. Posterior Soft-Tissue Repair after Primary THA is Durable at Mid-term Follow-Up: A Prospective MRI Study. Clin Orthop Relat Res. 2015 Oct;473(10):3183-9. PMID: 26047646

McLawhorn AS, Sculco PK, Weeks KD, Nam D, Mayman DJ. Targeting A New Safe Zone: A Step Towards Development of Patient-Specific Component Positioning in Hip Arthroplasty. Am J Orthop. 2015 Jun;44(6):270-6. PMID: 26046997

McLawhorn AS, Carroll KM, Blevins JL, Mayman DJ, Jerabek SA. Template-Directed Instrumentation Reduces Cost and Improves Efficiency for Total Knee Arthroplasty: An Economic Decision Analysis and Pilot Study. J Arthroplasty. 2015 Oct;30(10):1699-704. PMID: 26021908

McLawhorn AS, Beathe J, YaDeau J, Buschiazzo V, Purdue E, Sculco TP, Jules-Elysée K. Effects of Steroids on Thrombogenic Markers in Patients Undergoing Unilateral Total Knee Arthroplasty: A Prospective, Double-blind, Randomized Controlled Trial. J Orthop Res. 2015 Mar;33(3):412-6. PMID: 25565656

Maratt JD, Esposito CI, McLawhorn AS, Jerabek SA, Padgett DE, Mayman DJ. Pelvic Tilt in Patients Undergoing Total Hip Arthroplasty: When Does it Matter? J Arthroplasty. 2015 Mar;30(3):387-91. PMID: 25453626

For more publications, please see the PubMed listing.

Selected Presentations

McLawhorn AS, Levack A, Lee YY, Ge M, Do H, Lyman S, Dodwell ER. Bariatric Surgery Prior To Total Knee Arthroplasty Is Associated With Improved Short-Term Outcomes and Decreased Risk of Revision: A Propensity Score-Matched Analysis of A New York Statewide Database. AOA Annual Meeting and Leadership Conferences. Seattle, WA. 2016.

Schairer WW, Padgett DE, Halsey D, Iorio R, Lane JM, McLawhorn AS. Total Hip Arthroplasty for Femoral Neck Fracture Versus Osteoarthritis: A Propensity-Matched Cohort Study. The Hip Society/AAHKS Winter (Open) Meeting. Orlando, FL. 2016.

Fu M, McLawhorn AS, Cross MB, Padgett DE. Hypoalbuminemia Is A Better Predictor Than Obesity Of Complications After Total Knee Arthroplasty. The Knee Society/AAHKS Winter (Open) Meeting. Orlando, FL. 2016.

Barlow BT, McLawhorn AS, Westrich GH. Dual Mobility Implants are Cost-Saving for Primary THA: A Cost-Utility Analysis Using Direct and Indirect Costs. 28th Annual Congress of the International Society for Technology in Arthroplasty. Vienna, Austria. 2015.

McLawhorn AS, Southren D, Wang YC, Marx R, Dodwell ER. Cost-effectiveness of Bariatric Surgery Prior to Total Knee Arthroplasty in the Morbidly Obese. AAOS Annual Meeting. Las Vegas, NV. 2015.

McLawhorn AS, Maratt JD, Carroll KM, Mayman DJ. EOS Imaging is Accurate for Preoperative Total Hip Arthroplasty Templating. ICJR Pan Pacific Orthopaedic Congress. Kona, HI. 2014.

McLawhorn AS, Weeks KD, Nam D, Sculco PK, Mayman DJ. Accuracy and Precision of Acetabular Component Placement with Imageless Navigation in Obese Patients. CAOS International Annual Conference. Milan, Italy. 2014.

McLawhorn AS, Southren DL, Lee Y, Dodwell ER, Figgie MP. Body Mass Index Classification Independently Predicts Utility of Primary Total Hip Arthroplasty. Hospital for Special Surgery 26th Annual Holiday Hip and Knee Course. New York, NY. 2014.

Research Description

Dr. McLawhorn has particular interests in health care delivery, quality, safety, and value. His current research is focused on projects that will help joint replacement surgeons enhance the value of arthritis care that they provide to their patients.

His research areas of interest include:

  • Improving Value for Total Joint Replacement Patients
  • Value-Based Payment Models
  • Patient-Reported Outcomes
  • Optimizing Outcomes for Total Joint Replacement
  • Shared Decision-Making
  • Enabling/New Technologies for Joint Replacement

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Surgical Locations

Dr. McLawhorn performs surgery at the following locations: