Trigger finger

Trigger finger (also known as stenosing tenosynovitis) is one of the most common conditions affecting the hand. It occurs when the flexor tendon catches as it glides through the A1 pulley, causing a clicking sensation or locking when bending and straightening the finger.

Symptoms

• Clicking or snapping sensation when moving the affected finger
• Locking of the finger in a bent position, requiring force to straighten it
• Pain at the base of the finger, in the palm area
• Morning stiffness that improves throughout the day
• A palpable nodule in the palm of the hand

Causes

Trigger finger is caused by a mismatch between the size of the flexor tendon and the A1 pulley through which it glides. It is more common in women, diabetic patients and individuals who carry out repetitive manual tasks. Any finger may be affected, including the thumb.

Non-surgical treatment

In the early stages, a corticosteroid injection into the tendon sheath can resolve the problem in a high proportion of cases. If symptoms recur after one or two injections, surgery is recommended.

Trigger finger surgery

The procedure involves a small incision at the base of the finger to divide the A1 pulley, allowing the tendon to glide freely. It is an outpatient procedure performed under local anaesthesia.

Recovery

The finger can be moved from the first day after surgery. Stitches are removed after 10 to 12 days. Full recovery usually takes two to four weeks, with a swift return to normal daily activities.