Endoscopic Resection of Chronic Morel–Lavallée Lesion of the Knee

The Morel–Lavallée lesion is a closed internal soft-tissue degloving injury. About 15.7% of Morel–Lavallée lesions occur in the knee region. Morel–Lavallée lesions are considered chronic when the lesion contains a capsule. The capsule prevents resorption of the fluid content, and the lesion will recur when using conservative treatment alone. Surgical debridement with resection of the capsule is a more definitive treatment option, but it may induce wound complications. In this Technical Note, the technical details of endoscopic resection of chronic Morel–Lavallée lesion of the knee are discussed. This minimally invasive technique has the advantage of better cosmetic results and fewer wound complications.