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Case Reports in Radiology
Volume 2012 (2012), Article ID 390150, 3 pages
http://dx.doi.org/10.1155/2012/390150
Case Report

Fracture of the Fabella: A Rare Injury in Knee Trauma

1Division of Radiology, Department of Internal Medicine, Ribeirão Preto School of Medicine, University of São Paulo, 14030-000 Ribeirao Preto, SP, Brazil
2School of Medicine, Boston University, Boston, MA 02215, USA

Received 26 September 2012; Accepted 30 October 2012

Academic Editors: E. Bölke, T. Chakera, and E. Kapsalaki

Copyright © 2012 Andre Rodrigues Façanha Barreto et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

We present a case of a 21-year-old woman sustaining a traumatic [fabellar] fracture following a motor vehicle accident. The fabellar fracture was confirmed on plain films, which prompted further evaluation of the knee with ultrasound and magnetic resonance imaging to evaluate other possible associated injuries. Fracture of the fabella is a rare condition. Clinically, patients present with posterolateral knee pain, edema, and limited knee extension. Occasionally these symptoms may be very subtle, delaying the correct diagnosis and patient management.