Morel-Lavallée Lesion as a Cause of Calcaneal Tendon Retraction with Algofunctional Impact : A Case Report

Introduction: Morel-Lavallée lesion is a serolymphatic post-traumatic effusion between the skin and the underlying fascia. Often diagnosed late or unrecognized, it most commonly affects young adult males. Diagnosis is based on clinical suspicion confirmed by ultrasound or MRI. There is no consensus on its management.

Clinical Case: We report the case of a 20-year-old woman who was involved in a road traffic accident with tangential trauma to the left calcaneal tendon. Ultrasound scan showed a Morel-Lavallée collection and an MRI scan concluded that there was infiltration of the soft tissues opposite the calcaneal tendon. The patient was referred to the department of physical medicine and rehabilitation because of its functional impact. The treatment consisted of pain management and functional rehabilitation. The evolution was marked by a regression of the effusion and pain, with an improvement in the functional assessment.

Conclusion: Morel-Lavallée lesions are a little-known nosological entity in the context of violent trauma. Ultrasound is important for diagnosis and MRI remains the key examination for assessing the extent of chronicity. Conservative treatment using pressure dressings or even puncture and aspiration remains the first-line treatment.

Keywords: Effusion, Morel - Lavallée, Tangential Trauma, Rehabilitation.