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John Edgar Tis, MD

Assistant Professor of Orthopaedic Surgery

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Main Location

Johns Hopkins Outpatient Center

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  • Assistant Professor of Orthopaedic Surgery

Centers & Institutes

  • Children's Center


Cerebral Palsy, Hip Dislocations, Hip Dysplasia, Knee ACL reconstruction, Knee Joint Arthroscopy, Knee Surgery, Labral Tears of the Hip, Orthopaedic Surgery, Pediatric Orthopaedics, Snapping Hip Syndrome, Sports Medicine

Research Interests

Sports medicine; Biomechanics


Dr. John E. Tis is an assistant professor of orthopaedic surgery and pediatrics at the Johns Hopkins University School of Medicine.

A specialist in pediatric orthopaedics and sports medicine, Dr. Tis evaluates and treats children and adolescents suffering from a wide range of orthopaedic injuries and disorders, including complex pediatric deformities.

He is an expert in performing arthroscopic surgical procedures on the ankles, hips, shoulders and knees, including ACL reconstructions. He treats injuries that include ACL tears, hip and shoulder dislocations (dysplasia) and labral tears.

Dr. Tis also treats orthopaedic issues related to conditions including scoliosis, cerebral palsy, osteochondritis dessicans, slipped capital femoral epiphysis, Legg-Calve-Perthes disease and spondylolisthesis.

Dr. Tis earned his medical degree from the Georgetown University School of Medicine. He completed an orthopaedic surgery residency at Walter Reed Army Medical Center, a research fellowship at Johns Hopkins and a pediatric orthopaedics surgery fellowship at UCSD Rady Children''s Hospital.

Prior to joining the Johns Hopkins faculty, Dr. Tis served for four years as the Director of Pediatric Orthopaedics at Walter Reed Army Medical Center.

While in the military, he developed an orthopaedic sports medicine practice and became an expert in arthroscopically treating orthopaedic injuries and disorders. He also treated complex pediatric deformities.

Experienced in treating high-energy war wounds and limb defects, Dr. Tis served as the Chief of Orthopaedics at Ibn Sina Hospital (“Baghdad ER”) during Operation Iraqi Freedom. In 2011, he returned to Afghanistan and served for six months.

He is board certified in orthopaedic surgery and sports medicine.


  • English


American Academy of Orthopaedic Surgeons

Pediatric Orthopaedic Society of North America

Arthroscopy Association of North America

Scoliosis Research Society

Additional Resources

Additional Resources +
  • Education +


    • Georgetown University School of Medicine (Washington DC ) (1994)


    • Walter Reed National Military Medical Center / Orthopaedic Surgery (Washington DC ) (2002)


    • UCSD Rady Children's Hospital / Pediatric Orthopaedic Surgery (San Diego CA ) (2003)


    • Orthopaedic Sports Medicine, American Board of Orthopaedic Surgery (2008)
    • Orthopedic Surgery, American Board of Orthopaedic Surgery (2005)
  • Research & Publications +

    Selected Publications View all on PubMed

    1. Bell JC, Wolf EJ, Schnall BL, Tis JE, Tis LL, Potter BK. “Transfemoral amputations: the effect of residual limb length and orientation on gait analysis outcome measures.” J Bone Joint Surg Am. 2013 Mar 6;95(5):408-14. doi: 10.2106/JBJS.K.01446.
    2. Tis JE, Karlin LI, Akbarnia BA, Blakemore LC, Thompson GH, McCarthy RE, Tello CA, Mendelow MJ, Southern EP; Growing Spine Committee of the Scoliosis Research Society. “Early onset scoliosis: modern treatment and results.” J Pediatr Orthop. 2012 Oct-Nov;32(7):647-57. Review.
    3. Leu D, Sargent MC, Ain MC, Leet AI, Tis JE, Sponseller PD. “Spica casting for pediatric femoral fractures: a prospective, randomized controlled study of single-leg versus double-leg spica casts.” J Bone Joint Surg Am. 2012 Jul 18;94(14):1259-64. doi: 10.2106/JBJS.K.00966.
    4. Tis JE, Edmonds EW, Bastrom T, Chambers HG. “Short-term results of arthroscopic treatment of osteochondritis dissecans in skeletally immature patients.” J Pediatr Orthop. 2012 Apr-May;32(3):226-31. doi: 10.1097/BPO.0b013e31824afeb8.
    5. Srikumaran U, Tan EW, Belkoff SM, Marsland D, Ain MC, Leet AI, Sponseller PD, Tis JE. “Enhanced biomechanical stiffness with large pins in the operative treatment of pediatric supracondylar humerus fractures.” J Pediatr Orthop. 2012 Mar;32(2):201-5. doi: 10.1097/BPO.0b013e31824536c8.
  • Academic Affiliations & Courses +
  • Activities & Honors +


    Medal for Meritorious Service, U.S. Army, 2008

    Medals of Commendation, U.S. Army, 2008, 2007, 2004, 2002, 1996

    America’s Top Orthopedists, Consumers'' Research Council of America, 2007

    Fellow, American Academy of Orthopaedic Surgeons, 2005

    Medals of Achievement, U.S. Army, 2002, 2001

    Norman T. Kirk Award for Best Resident/Fellow Paper, Society of Military Orthopaedic Surgeons, 1999

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


    Johns Hopkins Outpatient Center
    601 N. Caroline Street
    5th floor
    Baltimore, MD 21287
    Phone: 410-955-3870
    Appointment Phone: 443-997-2663
    Fax: 410-955-1784
    Location Map
    Johns Hopkins Shoulder and Sports Medicine
    10700 Charter Drive
    Columbia, MD 21044
    Phone: 410-955-3870
    Appointment Phone: 443-997-2663
    Fax: 410-955-1784
    Location Map


    • Orthopaedic Surgery

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