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John Edgar Tis, M.D.

Headshot of John Edgar Tis
  • Associate Professor of Orthopaedic Surgery


ACL Reconstruction, Ankle Arthroscopy, Arthroscopic Surgery, Cerebral Palsy, Elbow Arthroscopy, Hip Dislocations, Hip Dysplasia, Hip Impingement, Hip Labral Tears, Knee Joint Arthroscopy, Knee Surgery, Labral Tears of the Hip, Orthopaedic Surgery, Orthopaedics, Pediatric ACL Reconstruction, Pediatric and Adolescent Sports Injuries, Pediatric Orthopaedic Surgery, Pediatric Orthopaedics, Pelvic Osteotomies, Scoliosis, Shoulder Arthroscopy, Shoulder Dislocations, Slipped Capital Femoral Epiphysis (SCFE), Spondylolisthesis, Sports Injuries, Sports Medicine more

Research Interests

Biomechanics; Sports medicine; Knee Ligament Injuries; Hip Dysplasia (dislocated hips); Shoulder Injuries and Dislocations; Osteochondritis Dessicans; Hip Arthroscopy more

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Johns Hopkins Outpatient Center

Appointment Phone: 443-997-2663
601 N. Caroline St.
5th Floor
Baltimore, MD 21287 map
Fax: 410-955-1784

Johns Hopkins Medicine - Howard County

Appointment Phone: 443-997-6754
10700 Charter Drive
Suite 205
Columbia, MD 21044 map


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 is currently one of the few fellowship-trained pediatric orthopaedic surgeons who is also board certified by the American Board of Orthopaedic Surgery in Sports Medicine. In addition to ACL tears and other sports injuries, he also enjoys treating a wide variety of pediatric deformities including hip dysplasia.

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 has a special interest in treating Perthes Disease and is a founding member of the International Perthes Study Group (IPSG). In addition, he also treats orthopaedic issues related to conditions including scoliosis, cerebral palsy, osteochondritis dessicans, slipped capital femoral epiphysis 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.

Dr. Tis is a member of numerous Professional Societies to include the Scoliosis Research Society, Pediatric Orthopaedic Society of North America, Arthroscopy Association of North America and the American Academy of Orthopaedic Surgeons, and was listed in Americas Top Doctors in 2007. more


  • Associate Professor of Orthopaedic Surgery

Departments / Divisions

Centers & Institutes



  • MD; Georgetown University School of Medicine (1994)


  • Orthopaedic Surgery; Walter Reed National Military Medical Center (2002)


  • Pediatric Orthopaedic Surgery; University of California San Diego Rady Children's Hospital (2003)

Board Certifications

  • American Board of Orthopaedic Surgery (Orthopaedic Sports Medicine) (2008)
  • American Board of Orthopaedic Surgery (Orthopedic Surgery) (2005)

Research & Publications

Clinical Trials

Learn more about clinical trials at Johns Hopkins Medicine.

Selected Publications

View all on PubMed

Bazzi AA, Brooks JT, Jain A, Ain MC, Tis JE, Sponseller PD. Is nonoperative treatment of pediatric type I open fractures safe and effective? J Child Orthop. 2014 Dec;8(6):467-71. doi: 10.1007/s11832-014-0616-x. Epub 2014 Nov 6. PMID: 25374057

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.

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.

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.

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.

Activities & Honors


  • Medal for Meritorious Service, U.S. Army, 2008
  • Medals of Commendation, U.S. Army, 2008
  • Medals of Commendation, U.S. Army, 2007
  • Medals of Commendation, U.S. Army, 2004
  • Medals of Commendation, U.S. Army, 2002
  • Medals of Commendation, U.S. Army, 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
  • Medals of Achievement, U.S. Army, 2001
  • Norman T. Kirk Award for Best Resident/Fellow Paper, Society of Military Orthopaedic Surgeons, 1999


  • American Academy of Orthopaedic Surgeons
  • Arthroscopy Association of North America
  • Pediatric Orthopaedic Society of North America
  • Scoliosis Research Society

Videos & Media

Play Video:

Repeat Kneecap Dislocations | Madelyn’s Story

Patient Ratings & Comments

The Patient Rating score is an average of all responses to physician related questions on the national CG-CAHPS Medical Practice patient experience survey through Press Ganey. Responses are measured on a scale of 1 to 5, with 5 being the best score. Comments are also gathered from our CG-CAHPS Medical Practice Survey through Press Ganey and displayed in their entirety. Patients are de-identified for confidentiality and patient privacy.

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