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Andrew Cosgarea, MD

Head Team Physician, Johns Hopkins University Athletic Department
Professor of Orthopaedic Surgery

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Johns Hopkins Medicine - Green Spring Station

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  • Head Team Physician, Johns Hopkins University Athletic Department
  • Director, Division of Sports Medicine and Shoulder Surgery
  • Professor of Orthopaedic Surgery


Arthroscopic Rotator Cuff Repair, Baseball Injuries, Elbow UCL Reconstruction, Knee ACL reconstruction, Knee meniscus repair, Orthopaedic Surgery, Orthopaedics, Patellar Instability Stabilization, Pediatric and Adolescent Sports Injuies, Shoulder Instability Stabilization Surgery, Shoulder Joint Dislocations, Sports Medicine, Superior Labrum Anterior and Posterior Lesions

Research Interests

Knee biomechanics; Patellofemoral disorders and treatment; ACL reconstruction; Computer simulation of knee biomechanics; Adolescent sports injuries; Knee and shoulder rehabilitation; Throwing shoulder biomechanics; Surgical and nonsurgical treatment of sports injuries; Patellofemoral instability


Dr. Andrew Cosgarea is a professor of orthopaedic surgery at the Johns Hopkins School of Medicine. His areas of clinical expertise include sports injuries, arthroscopic rotator cuff repair, elbow UCL reconstruction, knee ACL reconstruction and meniscus repair, shoulder instability stabilization surgery, shoulder joint dislocations and labrum lesions.

Dr. Cosgarea serves as the head team physician for the Johns Hopkins University Department of Athletics and the director of the Division of Sports Medicine and Shoulder Surgery at the Johns Hopkins School of Medicine.

He received his undergraduate degree from the Pennsylvania State University. He earned his M.D. from Jefferson Medical College in Philadelphia, Pennsylvania. He completed his residency at the University of Rochester and performed a fellowship in sports medicine at the Johns Hopkins Hospital.

Prior to joining Johns Hopkins, Dr. Cosgarea was an assistant professor of orthopedic surgery at the Ohio State University Medical Center and an orthopedic consultant with the Ohio State Athletic Department.

Dr. Cosgarea''s research interests include patellofemoral disorders and treatment, throwing shoulder biomechanics, ACL reconstruction, computer simulation of knee biomechanics, treatments for adolescent sports injuries, and knee and shoulder rehabilitation.

Dr. Cosgarea was a team physician for the Baltimore Orioles from 2000 to 2010. He was named one of the “125 Knee Surgeons and Specialist to Know” by Becker’s Spine Review in 2012. He is a member of various professional organizations, including the American Board of Orthopaedic Surgery and American Orthopaedic Society for Sports Medicine.


  • English


American Board of Orthopaedic Surgery
American Orthopaedic Society for Sports Medicine
American Academy of Orthopaedic Surgeons
Arthroscopy Association of North America
Maryland Orthopaedic Society
Herodicus Society
The Johns Hopkins Medical and Surgical Association

Additional Resources

Additional Resources +
  • Education +


    • Jefferson Medical College of Thomas Jefferson University (Philadelphia PA ) (1987)


    • University of Rochester Medical Center / Orthopaedic Surgery (Rochester NY ) (1992)


    • Johns Hopkins University School of Medicine / Sports Medicine (Baltimore MD ) (1993)


    • Orthopaedic Sports Medicine, American Board of Orthopaedic Surgery (2010)
    • Orthopedic Surgery, American Board of Orthopaedic Surgery (2006)
  • Research & Publications +

    Research Summary

    Dr. Cosgarea’s research interests involve knee biomechanics, especially the patellofemoral joint. He has worked in collaboration with biomechanical engineer John Elias, Ph.D., on a series of projects that use computational modeling to study patellofemoral realignment surgical techniques. He is also collaborating with Dr. John Carrino using a new imaging technology, dynamic CT scanning, to better analyze biomechanical parameters.

    He has been involved in a series of projects exploring posterior knee anatomy. He maintains a database that tracks surgical treatment in patients with pigmented villonodular synovitis. He has studied shoulder range of motion in baseball pitchers by collecting retrospective data from the Baltimore Orioles and prospective data from the Johns Hopkins baseball teams.

    Selected Publications View all on PubMed

    1. Zhen G, Wen C, Jia X, Li Y, Crane JL, Mears SC, Askin FB, Frassica FJ, Chang W, Yao J, Carrino JA, Cosgarea A, Artemov D, Chen Q, Zhao Z, Zhou X, Riley L, Sponseller P, Wan M, Lu WW, Cao X. “Inhibition of TGF-β signaling in mesenchymal stem cells of subchondral bone attenuates osteoarthritis.” Nat Med. 2013 Jun;19(6):704-12. doi: 10.1038/nm.3143. Epub 2013 May 19.
    2. Koehler RJ, Amsdell S, Arendt EA, Bisson LJ, Braman JP, Butler A, Cosgarea AJ, Harner CD, Garrett WE, Olson T, Warme WJ, Nicandri GT. “The Arthroscopic Surgical Skill Evaluation Tool (ASSET).”Am J Sports Med. 2013 Jun;41(6):1229-37. doi: 10.1177/0363546513483535. Epub 2013 Apr 2. Erratum in: Am J Sports Med. 2013 Jul;41(7):NP38.
    3. Spiker AM, Dixit S, Cosgarea AJ. “Triathlon: running injuries.” Sports Med Arthrosc. 2012 Dec;20(4):206-13. doi: 10.1097/JSA.0b013e31825ca79f. Review.
    4. Tanaka MJ, Bollier MJ, Andrish JT, Fulkerson JP, Cosgarea AJ. “Complications of medial patellofemoral ligament reconstruction: common technical errors and factors for success: AAOS exhibit selection.” J Bone Joint Surg Am. 2012 Jun 20;94(12):e87. doi: 10.2106/JBJS.K.01449. Review.
    5. Saranathan A, Kirkpatrick MS, Mani S, Smith LG, Cosgarea AJ, Tan JS, Elias JJ. “The effect of tibial tuberosity realignment procedures on the patellofemoral pressure distribution.” Knee Surg Sports Traumatol Arthrosc. 2012 Oct;20(10):2054-61. Epub 2011 Dec 2.
  • Academic Affiliations & Courses +
  • Activities & Honors +


    “125 Knee Surgeons and Specialists to Know,” Becker’s Spine Review, 2012

    Patellofemoral Research Excellence Award, ISAKOS 5th Biennial Congress, 2005

    Prince Alexandre de Merode Award, Oral Presentation, Sixth IOC World Congress on Sports Sciences, 2002

    First Place, Basic Science Presentation, Maryland Orthopaedic Association, 2000

    Best Team Presentation, “Operative and Non-Operative Treatment of Knee Sports Injuries,” Ohio State University, 1998-1999

    Best Program, “Sports Medicine: Anterior Cruciate Ligament Injuries,” Ohio State University, 1996-1997

    Silver Reel Award, “Sports Medicine: Anterior Cruciate Ligament Injuries,” International Television Association 29th Annual Video Festival

    Best Clinical/Surgical Presentation Award, “Common Knee Injuries,” Ohio State University, 1993-1994

    Gold Slate Award, “Common Knee Injuries,” International Television Association 26th Annual Video Festival

    Honorable Mention, “Common Knee Injuries,” New York Film Festival

  • Videos & Media +
  • Events +
  • Contact & Locations +


    Johns Hopkins Medicine - Green Spring Station
    10753 Falls Road
    Pavilion II
    Suite 215
    Baltimore, MD 21093
    Phone: 410-583-2864
    Appointment Phone: 443-997-2663
    Fax: 410-583-2855
    Location Map


    • Orthopaedic Surgery - Division of Sports Medicine and Shoulder Surgery

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