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Julius Kunle Oni, M.D.

Photo of Dr. Julius Kunle Oni, M.D.
4.9 out of 5
150 Ratings
  • Medical Director, Orthopaedics at Johns Hopkins Bayview
  • Assistant Professor of Orthopaedic Surgery

Languages: English, Yoruba


Core Decompression for Avascular Necrosis of the Hip, Degenerative Joint Disease (Osteoarthritis of the Hip), Hip Arthritis, Hip Bursitis, Hip Conditions, Hip Dislocations, Hip Fractures, Hip Injuries, Hip Replacement, Joint Replacement, Knee Arthritis, Knee Dislocations, Knee Injuries, Knee Joint Arthroscopy, Knee Replacement, Knee Surgery, Orthopaedic Surgery, Partial Knee Replacement, Revision Hip Surgery, Revision Knee Surgery, Total Hip Replacement, Total Joint Replacement, Total Knee Replacement more

Research Interests

optimization of postoperative outcomes after total joint replacement; unicompartmental knee replacement; avascular necrosis; the use of augmented reality in preoperative patient education and surgical preparation more

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Johns Hopkins Bayview Medical Center

Appointment Phone: 443-997-2663
4940 Eastern Avenue
Building A 6th Floor
Baltimore, MD 21224 map

Johns Hopkins Community Physicians - Green Spring Station

2360 W. Joppa Road
Joppa Concourse
Lutherville, MD 21093 map

Johns Hopkins Medicine - White Marsh

Appointment Phone: 443-997-2663
4924 Campbell Boulevard
Nottingham, MD 21236 map


Julius Oni, M.D., is a member of the Department of Orthopaedic Surgery who specializes in hip and knee replacement, particularly minimally invasive joint replacement surgery and complex primary and revision joint replacements.

His research interests include optimization of postoperative outcomes after total hip and knee replacements, unicompartmental knee replacement, avascular necrosis, and the use of technology in preoperative patient education and surgical preparation.

He is a member of the American Academy of Orthopaedic Surgeons (AAOS), the American Association of Hip and Knee Surgeons (AAHKS), and the National Medical Association. He serves on the AAOS Adult Reconstruction Knee Program Committee and the AAHKS Humanitarian Committee; and is currently the Mentoring Committee Chair for the J. Robert Gladden Orthopaedic Society. more


  • Medical Director, Orthopaedics at Johns Hopkins Bayview
  • Chair of Diversity Council and Diversity and Inclusion Officer, Department of Orthopedic Surgery
  • Assistant Professor of Orthopaedic Surgery

Departments / Divisions

Centers & Institutes



  • MD, Howard University College of Medicine (2007)


  • New York University Langone Medical Center / Orthopaedic Surgery (2012)


  • Rush University Medical Center / Adult Reconstructive Orthopedic Surgery (2013)

Board Certifications

  • American Board of Orthopaedic Surgery / Orthopaedic Surgery (2015)

Research & Publications

Selected Publications

View all on Pubmed

The role of femoral neck anteversion in the development of osteoarthritis in dysplastic hips. Li H, Wang Y, Oni JK, Qu X, Li T, Zeng Y, Liu F, Zhu Z. Bone Joint J. 2014 Dec;96-B(12):1586-93. doi: 10.1302/0301-620X.96B12.33983.

Chronic infection leading to failure of a composite femoral stem: a report of two cases. Saltzman BM, Haughom B, Oni JK, Levine BR. HSS J. 2014 Jul;10(2):180-5. doi: 10.1007/s11420-013-9378-0. Epub 2014 Jan 16.

Effect of a selective COX-2 inhibitor, celecoxib, on heterotopic ossification after total hip arthroplasty: a case-controlled study. Oni JK, Pinero JR, Saltzman BM, Jaffe FF. Hip Int. 2014 May-Jun;24(3):256-62. doi: 10.5301/hipint.5000109. Epub 2014 Jan 28.

Total hip replacement for developmental dysplasia of the hip with more than 30% lateral uncoverage of uncemented acetabular components. Li H, Mao Y, Oni JK, Dai K, Zhu Z. Bone Joint J. 2013 Sep;95-B(9):1178-83. doi: 10.1302/0301-620X.95B9.31398.

Prognostic Value of the Radiologic Appearance of the Navicular Ossification Center in Congenital Talipes Equinovarus. Atanda AA, Oni JK, Ramsden DM, Yoon RS, Ahmad AA, Otsuka NY. J Foot Ankle Surg. 2015 Sep-Oct;54(5):844-7. doi: 10.1053/j.jfas.2015.01.007. Epub 2015 Jun 3.

Activities & Honors


  • Top Doctor, Baltimore Magazine, 2019
  • Top Doctor, Baltimore Magazine, 2020


  • American Academy of Orthopaedic Surgeons


  • American Association of Hip and Knee Surgeons
  • National Medical Association

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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