Alex Arden Johnson, M.D.

Headshot of Alex Arden Johnson
  • Director of Hip Preservation, Johns Hopkins Department of Orthopaedic Surgery
  • Assistant Professor of Orthopaedic Surgery


ACL Reconstruction, Anterior Shoulder Instability, Arthritis of the Shoulder, Arthroscopic Rotator Cuff Repair, Arthroscopic Surgery, Articular Cartilage Restoration, Baseball Injuries, Elbow Arthroscopy, Elbow UCL Reconstruction, Femoral-Acetabular Impingement (FAI), Hip Arthroscopy, Hip Impingement, Hip Injuries, Hip Labral Tears, Joint Preservation, Joint Reconstruction, Knee Injuries, Knee Meniscus Repair, Labral Tears of the Hip, Meniscus Tears, Multi-Ligament Knee Injuries, OATS Cartilage Repair Surgery, Orthopaedic Shoulder Surgery, Orthopaedic Sports Medicine, Orthopedic Surgery, Patellar Dislocations, Patellofemoral Pain Syndrome (Runner's Knee), Pediatric and Adolescent Sports Injuries, Rotator Cuff, Rotator Cuff Injuries, Shoulder Arthroscopy, Shoulder Dislocations, Shoulder Instability Stabilization Surgery, Shoulder Joint Dislocations, Shoulder Labral Tear, Shoulder Surgery, Sports Injuries, Sports Injuries to the Shoulder, Sports Medicine, Tear - Anterior Cruciate Ligament (ACL), Tennis Elbow more

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Johns Hopkins Health Care and Surgery Center

Appointment Phone: 240-762-5100
6420 Rockledge Drive
Suite 2200
Bethesda, MD 20817
Fax: 410-367-2237
Johns Hopkins Health Care and Surgery Center - Google Maps


Alex Johnson, M.D., is an orthopaedic surgeon and fellowship-trained sports medicine specialist. He specializes in treating patients with conditions of the hip, knee, shoulder, and elbow. Dr. Johnson is skilled in arthroscopy, a minimally invasive procedure to diagnose and treat many joint conditions. Dr. Johnson is an expert in hip arthroscopy and is the Director of hip preservation at Johns Hopkins. Dr. Johnson is passionate about helping people of any age and athletic level return to the sports and activities they love. 

Dr. Johnson is an assistant professor in the Johns Hopkins Department of Orthopaedic Surgery. He graduated with highest honors from the Georgia Institute of Technology with a degree in nuclear and radiological engineering. He then obtained his M.D., graduating cum laude from Emory University, and completed an orthopaedic surgery residency at Johns Hopkins. While in residency training, Dr. Johnson also completed a National Institutes of Health research fellowship, investigating applications for head-mounted displays and augmented reality in orthopaedic surgery. Most recently, Dr. Johnson completed a sports medicine fellowship at the world renowned American Sports Medicine Institute at the Andrews Sports Medicine & Orthopaedic Center in Birmingham, Alabama. During his fellowship, Dr. Johnson served as assistant team physician for the Birmingham Barrons baseball team, the Alabama Ballet, the University of West Alabama Tigers and the University of Alabama Crimson Tide. 

His clinical interests include ACL reconstruction, arthroscopic rotator cuff repair, shoulder stabilization, elbow arthroscopy, ulnar collateral ligament (Tommy John) surgery, treatment of hip labral tears and femoroacetabular impingement (FAI), endoscopic hamstring repair, endoscopic gluteus medius repair and cartilage restoration. 

Dr. Johnson’s research interests include computer-aided surgery, head mounted displays and augmented reality for use in orthopaedic surgery. more


  • Director of Hip Preservation, Johns Hopkins Department of Orthopaedic Surgery
  • Team Physician, Johns Hopkins University Athletics
  • Assistant Professor of Orthopaedic Surgery

Departments / Divisions



  • MD; Emory University School of Medicine (2013)


  • Orthopaedic Surgery; Johns Hopkins University School of Medicine (2019)


  • Sports Medicine; American Sports Medicine Institute (2020)

Board Certifications

  • American Board of Orthopaedic Surgery (Orthopaedic Surgery) (2022)

Research & Publications

Selected Publications

Johnson A*, Andress S*, Unberath M, Winkler AF, Yu K, Fotouhi J, Weidert S, Osgood G, Navab N. On-the-fly augmented reality for orthopedic surgery using a multimodal fiducial. J Med Imaging (Bellingham). 2018 Apr 5

Qian L, Barthel A, Johnson A, Osgood G, Kazanzides P, Navab N, Fuerst B. Comparison of optical see-through head-mounted displays for surgical interventions with object-anchored 2D-display. Int J Comput Assist Radiol Surg. 2017 Jun;12

Fotouhi J, Unberath M, Song T, Gu W, Johnson A, Osgood G, Armand M, Navab N. Interactive Flying Frustums (IFFs): spatially aware surgical data visualization. Int J Comput Assist Radiol Surg. 2019 Jun;14

Rahman R, Wood ME, Qian L, Price CL, Johnson AA, Osgood GM. Head-Mounted Display Use in Surgery: A Systematic Review. Surg Innov. 2020 Feb;27

McFarland E, Bernard J, Dein E, Johnson A. Diagnostic Injections About the Shoulder. J Am Acad Orthop Surg. 2017 Dec;25


Patent # 20200275988 | 

Activities & Honors


  • Top Doctor Award, Washingtonian Magazine, 2023
  • Alpha Omega Alpha, 2013
  • Determining weight-bearing compliance using a pressure-sensing boot, Sponsored research grant with DJO Global, 2017
  • Johns Hopkins Delta Grant 2020 - Socratic Artificial Intelligence Learning (SAIL)


  • American Orthopaedic Society for Sports Medicine, 2019
  • Computer Aided Medical Procedures (CAMP), 2016

    Active member of this research group, which is part of the Laboratory for Computational Sensing and Robotics (LCSR) at Johns Hopkins University

  • American Academy of Orthopaedic Surgeons, 2013

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