Progressive locking of forth finger right hand when he bends and straightens the finger for eight months.
Loading Stack -
0 images remaining
Thickening of the flexor tendon sheath and tendon especially at the level of fourth finger on the proximal half of the proximal phalanx and the A1 pulley is seen, which causes stenosing tenosynovitis of the flexor tendon.
Synovial sheath effusion around the fourth flexor tendon also is seen.
Trigger finger is a type of stenosing tenosynovitis. It develops due to repetitive microinjury from frequent flexion-extension movements of the fingers.