Trigger Finger

Trigger fingers mostly arise from a thickening of the flexor tendons or in rare cases also from their constriction by the annular pulley at the finger base on the flexor side. This reduces the ability of the flexor tendon to slide in its tendon sheath, leading to motion-related pain and, especially when the fingers are extended, to the thickened tendon being caught at the annular pulley, followed by an abrupt and often painful passage of its thickened part through it. If the problem is progressive, the flexor tendon can ultimately be completely arrested, meaning that the finger can no longer be extended, or only passively and painfully using the other hand. These unpleasant symptoms can be easily eliminated by a minor operation under local anaesthesia that removes the mechanical obstacle.

The annular pulley is exposed by way of a 2 cm long incision in the palm, and split under visual control. The freeing effect of the surgery is checked before the wound is then closed again. The skin sutures are removed after 10 days, and covered by a thin compression bandage. To prevent a scarred adhesion of the tendons to their environment, the finger is actively moved through its range immediately after the operation.