Trigger finger (release of the A1 pulley)

Trigger finger is caused by a thickening of the flexor tendon or a narrowing of the A1 pulley, preventing the tendon from sliding normally. It causes pain, a snapping sensation or a locking of the finger, particularly in the morning.

When medical treatments (rest, injections) prove insufficient, surgery may be recommended. Performed on an outpatient basis under local anaesthetic, the procedure involves opening the A1 pulley to restore normal gliding of the tendon. Recovery is generally rapid, with immediate mobilisation of the finger and the snapping sensation resolving in the vast majority of cases.