Extensor carpi ulnaris tendon split tear

Case contributed by Bahman Rasuli


Right wrist pain on the ulnar side since 5 months ago.

Patient Data

Age: 55 years
Gender: Female

Split, subluxed extensor carpi ulnaris (ECU)tendon and surrounding fluid at the level of ulna styloid and triangular fibrocartilage complex

The ECU subsheath is diffusely fragmented

Radioscaphoid joint effusion

Bilobed fluid equivalent signal synovial cyst measuring about 9*13 mm originated from the triquetrum-pisiform joint space. 

Case Discussion

Middle age women presented with the non-traumatic onset of right wrist pain on the ulnar aspect. MRI findings suggest extensor carpi ulnaris tendinosis with surrounding edematous changes of the tendon sheath reflecting tenosynovitis. 

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