Trigger Finger (Stenosing Tenosynovitis)

Trigger finger is a condition that causes a fingers or thumb to get stuck in a bent position (Figure 1). Its technical name is stenosing (thickening) tenosynovitis (inflammation of the tendon lining). A trigger finger may straighten with a snap—like pulling and releasing a trigger, which is how it gets its name. This happens when the tendon that helps your finger move becomes irritated and swollen, often forming a nodule. this makes it harder for the tendon to slide through the sheath (a tunnel-like structure) that surrounds it. Trigger finger is more common in people who perform repetitive gripping actions, such as musicians, farmers, or factory workers. Other risk factors include diabetes, rheumatoid arthritis, and being between the ages of 40 and 60. Women are also more likely to develop this condition than men.

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Diagnosing Trigger Finger

A doctor usually diagnoses trigger finger by listening to your symptoms and examining your hand. A patient might describe pain, stiffness, or a popping sensation when the move their finger. Sometimes the finger is stuck in a bent position and has to be straightened with help. The doctor may feel a bump or nodule at the base of the affected finger. X-rays or other imaging tests are usually not needed because the problem involves the tendon and not the bones.

Trigger Finger Treatment

Treatment for trigger finger often starts with simple, non-surgical options. Resting the hand and avoiding activities that cause symptoms can be helpful. Wearing a splint, especially at night, may keep the finger in a straight position and reduce irritation. Over-the-counter anti-inflammatory medications, like ibuprofen, can help reduce swelling and pain. A corticosteroid injection into the tendon sheath is another common treatment that can quickly reduce inflammation and often solves the problem.

Surgical Treatment of Trigger Finger

If these treatments don’t work or if the finger is stuck in a bent position for a long time, surgery may be needed. Trigger finger surgery is a minor procedure usually done under local anesthesia. The surgeon makes a small cut in the palm and releases the tight part of the tendon sheath, which allows the tendon to move freely again. This surgery is generally safe and has a high success rate.

Long-Term Outlook

The long-term outlook for someone with trigger finger is usually very good. Most people recover fully, especially if the condition is treated early. After treatment, the finger usually regains its normal movement and strength. However, in some cases, especially if left untreated, stiffness or mild discomfort can remain. People with certain medical conditions, like diabetes, may have a higher chance of the condition coming back. Regular hand exercises and avoiding overuse can help prevent future problems.

Edited by Albert Sarpong and Stephen Pinney MD, December 30th 2025