Somewhat similar to carpal tunnel syndrome, trigger finger also involves a narrowing around a tendon that causes pain. Also known as stenosing tenosynovitis, trigger finger occurs when a finger or thumb sticks in a bent position and straightens quickly, much like pulling and releasing a trigger. In severe cases, the fingers lock in the bent position. More common in women and people with diabetes, trigger finger occurs when the lubricating fluid in the finger — tenosynovium — becomes inflamed and narrows the space around the tendon. The un-lubricated tendon, then, catches in a bent position before popping straight, and each time this happens, the tendon itself becomes more irritated. Trigger finger symptoms include: finger stiffness, usually in the morning; popping or clicking as the finger moves; a bump or tenderness at the base of the affected finger; finger catching and popping straight; finger locking and sticking in a bent position.
Have you been diagnosed with or believe you have trigger finger, or stenosing tenosynovitis? Learn more from the dedicated orthopedic specialists at the Hand to Shoulder Center of Wisconsin. Our team is comprised of orthopedic doctors and specially trained occupational and physical therapists and staff that have extensive experience with trigger finger treatment, including surgery and exercises. Learn more about trigger finger treatments and how the orthopedic team of specialists at Hand to Shoulder Center of Wisconsin can help. Stenosing tenosynovitis, more commonly known as trigger finger, is the catching or locking of a finger or thumb in a bent flexed position. Trigger finger can affect one or more fingers or thumbs, although it is more commonly known to affect the little, ring finger or thumb area of the hand.
Trigger finger is a condition that involves one of the fingers or thumb becoming stuck in a bent position and then rapidly straightened like the trigger of a gun. This condition is caused by a narrowing of the sheath that surrounds the tendons in the finger, and is common in people who perform repetitive gripping actions but can occur in anyone. Trigger finger causes stiffness, pain and may eventually lead to an inability to completely straighten the finger. When you try to straighten your finger, it will lock or catch before popping out straight.
Wondering why you might experience a painful click when you bend a finger or thumb? Find the answers to questions that pique your curiosity in our series, The Short Answer. Rheumatologist Chad Deal, MD, answers this one.