Carpal alignment is normal and there are no tears of the dorsal or ventral intercarpal ligaments (series #14 image #9).,There is a longitudinal split tear of the ECU tendon which is enlarged both at the level of and distal to the ulnar styloid with severe synovitis (series #4 images #8-16, series #3 images #9-16).,There is thickening of the extensor tendon sheaths within the fourth dorsal compartment with intrinsically normal tendons (series #4 image #12).,There is extensor carpi radialis longus and brevis synovitis in the second dorsal compartment (series #4 image #13).,Normal flexor tendons within the carpal tunnel. 
Carpal alignment is normal and there are no tears of the dorsal or ventral intercarpal ligaments ( series # 14 image # 9).,There is a longitudinal split tear of the ECU tendon which is enlarged both at the level of and distal to the ulnar styloid with severe synovitis ( series # 4 images # 8 - 16 , series # 3 images # 9 - 16).,There is thickening of the extensor tendon sheaths within the fourth dorsal compartment with intrinsically normal tendons ( series # 4 image # 12).,There is extensor carpi radialis longus and brevis synovitis in the second dorsal compartment ( series # 4 image # 13).,Normal flexor tendons within the carpal tunnel .