Morel-Lavallee lesion in distal thigh: A case report.

It is a relatively rare condition involving a close degloving injury due to direct trauma with tangential force followed by the separation of the subcutaneous tissue from the underlying fascia. The rupture of small perforating vessels in this area, resulting in the formation of a cavity that filled with blood, lymph and fat foci, the latter being sometimes necrotic. Morel-Lavallée lesion was originally described in the lateral aspect of the proximal thigh, which is the most common site of this lesion; however other anatomic sites such as periscapular, lumbar and gluteal regions, ankles and knees have been described in the literature. Various methods of treatment has been described, but open debridement can result in a successful functional outcome.