Sonographic Diagnosis and Follow-Up of a Rare Large Pre-Patellar Morel-Lavallee Lesion.

ABSTRACT: Morel-Lavallée lesions (MLLs) in the knee are rare. This article presents one of the largest documented cases (13.46 × 12.73 × 3.03 cm), successfully managed non-operatively with clinical and sonographic follow-up. The patient was a 19-year-old male who sustained a bike accident, presenting with immediate gross swelling over the anterior knee, along with bruising and skin abrasions. He was unable to walk and was admitted to the orthopedic ward. A bedside handheld ultrasound examination revealed a large pre-patellar MLL, primarily filled with blood clots. Ultrasound-guided aspiration resulted in a dry tap. The diagnosis was confirmed through magnetic resonance imaging, and conservative management was implemented. At four weeks post-injury, the patient showed significant improvement. He achi

SUBMITTER: Siu PK 

PROVIDER: S-EPMC11988603 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature