HSS Ultrasound of the Month Case 158

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Clinical History 38 year old female with chronic bilateral posterolateral ankle pain.

Ultrasound of the Month – Case 158

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Ultrasound of the Month – Case 158

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Ultrasound of the Month – Case 158

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Diagnosis: Bilateral Peroneal Tendon Intrasheath Subluxation Intrasheath subluxation refers to displacement of the peroneal tendons over each other in the retromalleolar groove. This is in the setting of an intact superior peroneal retinaculum, which prevents dislocation of the tendons out of the retromalleolar groove. Patients typically experience the subluxation as a painful snapping or clicking sensation along the posterolateral aspect of the ankle upon ankle circumduction. Dynamic ultrasound is the imaging modality of choice to evaluate for this pathology.

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