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Posterior dislocation of a discoid meniscus in a child: a case report

Al-Taki, Muhyeddine M.a; Nahle, Imad S.a; Al-Kutoubi, Aghiadb; Haidar, Rachid K.a

Journal of Pediatric Orthopaedics B: July 2014 - Volume 23 - Issue 4 - p 354–357
doi: 10.1097/BPB.0000000000000023

Discoid meniscus of the knee is a well-known anatomic and congenital variant of the lateral meniscus. It is often asymptomatic, but can be associated with knee pain and other symptoms. Posterior dislocation of the discoid meniscus is an extremely rare finding; to the best of our knowledge, only one case has been reported in the literature. Here, we report a case of 10-year-old girl who presented with right knee pain with no history of trauma. The radiograph of her right knee was negative but MRI showed bilateral lateral discoid menisci with posterior dislocation in the right knee and some subluxation in the left. She underwent right knee arthroscopic lateral meniscoplasty with excellent outcome. This case demonstrates the possibility of torn and dislocated discoid lateral menisci management through arthroscopic reduction and repair.

Departments of aSurgery

bDiagnostic Radiology, American University of Beirut Medical Center, Beirut, Lebanon

Correspondence to Rachid K. Haidar, MD, Department of Surgery, American University of Beirut Medical Center, PO Box 11-0236, Riad El Solh, 1107 2020 Beirut, Lebanon Tel: +961 331 0877; fax: +961 136 3291; e-mail:

© 2014 by Lippincott Williams & Wilkins, Inc.