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Case Reports in Orthopedics
Volume 2016, Article ID 8723489, 4 pages
http://dx.doi.org/10.1155/2016/8723489
Case Report

Morel-Lavallée Lesion of the Knee in a Recreational Frisbee Player

1Department of Family Medicine, University of Colorado School of Medicine, Denver, CO 80238, USA
2CU Sports Medicine, Division of Sports Medicine and Shoulder Surgery, Department of Orthopaedics, University of Colorado School of Medicine, Denver, CO 80238, USA
3Department of Family Medicine, AFW Clinic, University of Colorado School of Medicine, 3055 Roslyn Street, Denver, CO 80238, USA

Received 12 April 2016; Accepted 16 June 2016

Academic Editor: John Nyland

Copyright © 2016 Alison Shmerling 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

Traumatic swelling/effusion in the knee region is a relatively common presenting complaint among athletes and nonathletes. Due to its broad differential diagnosis, a comprehensive evaluation beginning with history and physical examination are recommended. Knee joint effusion can be differentiated from other types of swelling by careful physical examination. Imaging, including plain radiography, ultrasound, and magnetic resonance imaging (MRI), is preferred modality. Aspiration of a local fluctuating mass may help with the diagnosis and management of some of these conditions. We present a case of a 26-year-old gentleman with superomedial Morel-Lavallée lesion (MLL) of the knee with history of a fall during a Frisbee game. His MLL was successfully treated with therapeutic aspiration and compression wrap without further sequelae. MLL is a rare condition consisting of a closed degloving injury caused by pressure and shear stress between the subcutaneous tissue and the superficial fascia or bone. Most commonly, MLL is found over the greater trochanter and sacrum but in rare cases can occur in other regions of the body. In most cases, concurrent severe injury mechanisms and concomitant fractures are present. MLL due to sports injuries are very rare. Therapeutic strategies may vary from compression wraps and aspiration to surgical evacuation.