Extensor digitorum longus and peroneus tertius tenosynovitis

Case contributed by Maulik S Patel
Diagnosis almost certain

Presentation

Pain and swelling in the anterior aspect of the ankle hindfoot and dorsum of the midfoot for 15 days.

Patient Data

Age: 25 years
Gender: Male

Synovial thickening of the extensor digitorum longus tendons with effusion.

Label 1 to 4 shows the extensor digitorum longus tendons.

Label 5 shows the peroneus tertius.

Case Discussion

This case is an example of tenosynovitis of the extensor digitorum longus and peroneus tertius tendons on ultrasound.

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