Calcaneofibular ligament sprain

Case contributed by Maulik S Patel
Diagnosis almost certain

Presentation

Two episodes of right ankle twisting during the last few days. Lateral ankle pain. Negative ankle radiograph for a fracture.

Patient Data

Age: 25 years
Gender: Female
ultrasound

Small effusion in the ankle joint anterior recess. Normal echopattern of the anterior inferior tibiofibular ligament and anterior talofibular ligament. Intact calcaneofibular ligament with hypoechoic thickening as compared to the asymptomatic side. The lateral recess of the talocalcaneal joint effusion is deep to the sprained calcaneofibular ligament.

Case Discussion

The case shows an isolated calcaneofibular ligament sprain.

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