A painful disability in the hand affecting the finger or thumb. It is caused by mechanical impingement of the digital flexor tendons as they pass through a narrowed retinacular pulley at the level of the metacarpal head. Thickening of the sheath and fibrocartilaginous metaplasia can occur, and nodules can form. (From Green's Operative Hand Surgery, 5th ed, p2137-58).
Also Known As:
Finger, Snapping; Fingers, Snapping; Trigger Thumb; Snapping Finger; Trigger Digits; Digit, Trigger; Digits, Trigger; Entrapment, Flexor Tendon; Entrapments, Flexor Tendon; Flexor Tendon Entrapments; Snapping Fingers; Tendon Entrapment, Flexor; Tendon Entrapments, Flexor; Thumb, Trigger; Thumbs, Trigger; Trigger Digit; Trigger Thumbs; Flexor Tendon Entrapment