Stenosing tenosynovitis of the flexor tendon sheath is known as trigger finger.
The flexor tendon causes painful popping or snapping as the patient flexes and extends the digit. The patient may present with a digit locked in a particular position, most often flexion, which may require gentle, passive manipulation into full extension.
Management
Conservative treatment
Corticosteroid injection in the area of tendon sheath thickening is considered to be the first-line treatment of choice for TF.
Custom-made splinting of the MCP joint.
Surgery
Trigger digits that fail to respond to 2 injections usually require surgical treatment, in the form of surgical release of the A1 pulley, under local anesthesia.
