Morel-lavallee Lesion Of The Lateral Hip

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Morel-lavallee Lesion Of The Lateral Hip

Authors, Editors, Case Information Author: Kathy Vidlock, MD Affiliation: Rocky Vista University Co Author(s): none Senior Editor: Carlton Covey, MD, MEd Clinical Vignette: A 38-year-old female runner presented with diffuse right hip pain for 3 days. She fell on her right side at mile 10 of a 50 mile race and slid along the trail. She had immediate onset pain, and noted swelling thereafter. Exam showed visible swelling and an abrasion. Full ROM and strength of the hip were noted without deficits. Type of Probe Used: Linear 12-3 MHz Unlabeled Long Axis View of the Lateral Hip Unlabeled Long Axis View of the Lateral Hip Labeled Long Axis View of the Lateral Hip Labeled Long Axis View of the Lateral Hip with an anechoic area between the subcutaneous tissue/superficial fascial layer and the deep fascia/muscular layer. Unlabeled Short Axis View of the Lateral Hip Unlabeled Short Axis View of the Lateral Hip Labeled Short Axis View of the Lateral Hip Labeled Short Axis View of the Lateral Hip with an anechoic area between the subcutaneous tissue/superficial fascial layer and the deep fascia/muscular layer. Unlabeled Long Axis View of the Lateral Hip Lesion Measurement Unlabeled Long Axis View of the Lateral Hip with evidence of the Morel Lavallee lesion measuring approximately 4.84cm x 1.00cm however this does not encorporate the entire lesion and measurement was limited by the machine in use. Interpretation Image Interpretation: There is an anechoic area between the superficial and deep fascial layers over the right lateral hip. The largest area is measured as approximately 4.84cm x 1.00cm, but measurement of the entire lesion was limited by the machine being used. Teaching Pearl: A Morel-Lavallee lesion is a closed traumatic degloving injury caused by shearing of subcutaneous tissue away from the underlying fascia and is often filled by hemorrhagic fluid. The lateral hip and greater trochanter region is a classic location because mobile subcutaneous tissue overlies the firm fascia lata. Ultrasound demonstrates a fluid collection in the perifascial plane, with echogenicity depending on blood products, lymph, fat, debris, and chronicity. It's important to measure the lesion size, document the presence septations or a capsule, and recognize that chronic encapsulated lesions respond less predictably to simple aspiration and compression. References: 1. Lacout A, Jarraya M, Marcy PY, Thariat J, Carlier RY. Myositis ossificans imaging: keys to successful diagnosis. Indian J Radiol Imaging. 2012;22(1):35-39. doi:10.4103/0971-3026.95402 2. Tyler P, Saifuddin A. The imaging of myositis ossificans. Semin Musculoskelet Radiol. 2010;14(2):201-216. doi:10.1055/s-0030-1253161 3. Savvidou O, Papakonstantinou O, Lakiotaki E, Melissaridou D, Korkolopoulou P, Papagelopoulos PJ. Post-traumatic myositis ossificans: a benign lesion that simulates malignant bone and soft tissue tumours. EFORT Open Rev. 2021;6(7):572-583. doi:10.1302/2058-5241.6.210002
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Authors, Editors, Case Information

Unlabeled Long Axis View of the Lateral Hip

Labeled Long Axis View of the Lateral Hip

Unlabeled Short Axis View of the Lateral Hip

Labeled Short Axis View of the Lateral Hip

Unlabeled Long Axis View of the Lateral Hip Lesion Measurement

Interpretation

UPCOMING EVENTS

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