What is Trigger Finger?

What is Trigger Finger?

Trigger finger makes a finger get stuck in a bent position. It may straighten suddenly with a snap. The fingers most often affected are the ring finger and the thumb, but it can happen to any finger. The condition is also known as stenosing tenosynovitis.

Causes and Risk Factors

Trigger finger occurs when the tendon that controls that finger can't glide smoothly in the sheath that surrounds it. This may occur if part of the tendon sheath becomes swollen or if a small lump (nodule) forms on the tendon. Risk factors include:

• Repetitive Gripping: Occupations or hobbies that require repetitive hand use and gripping.
• Certain Health Conditions: People with diabetes or rheumatoid arthritis are at a higher risk.
• Age and Gender: It is more common in women and typically affects people between the ages of 40 and 60.

Symptoms and Treatment

Symptoms usually start mild and progress over time. They include finger stiffness (especially in the morning), a popping or clicking sensation when moving the finger, and tenderness or a bump at the base of the affected finger.

Treatment ranges from conservative measures like rest, splinting, and anti-inflammatory medications to corticosteroid injections to reduce inflammation. In severe cases where the finger remains locked, surgery may be necessary to release the tendon sheath.