- Rheumatoid Arthritis
- Trigger Finger & Trigger Thumb
- I Think I Have a Trigger Thumb – What Can I Do About It?
Those with trigger finger or trigger thumb may have stiffness when bending the finger(s) or hear snapping and popping when moving the finger(s). Depending on the the finger(s) or thumb. Swelling or tender lump in the palm of the hand.and
Normal joints consist of two smooth, cartilage-covered bone surfaces that fit together as a matched set and glide against one other. Rheumatoid arthritis is one of the most common forms of arthritis in the hand, in addition to osteoarthritis and post-traumatic arthritis. Rheumatoid arthritis affects the cells that line and normally lubricate the joints synovial tissue. This is a systemic condition can affect the whole body , which means that it may affect multiple joints, usually on both sides of the body. The joint lining synovium becomes inflamed and swollen and erodes the cartilage and bone.
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. People tend to bend their fingers up and down without much thought. As you try to unbend an affected finger or thumb, the digit locks into place like a trigger — oftentimes clicking painfully as you extend it. Cleveland Clinic is a non-profit academic medical center. Advertising on our site helps support our mission.
These pulleys hold the tendons close to the bone. This is similar to how a line is held on a fishing rod Figure 1. Trigger finger occurs when the pulley becomes too thick, so the tendon cannot glide easily through it Figure 2. Trigger fingers are more common with certain medical conditions such as rheumatoid arthritis , gout and diabetes. Repeated and strong gripping may lead to the condition. In most cases, the cause of the trigger finger is not known. Trigger finger may start with discomfort felt at the base of the finger or thumb, where the finger joins the palm.
First things first: if your thumb joint is swollen, hot, and inflamed you should seek medical care immediately , as this could be a sign of a severe infection. In a normally functioning hand, tendons run through sheaths or pulleys to the fingers to make them bend. With trigger thumb, medically known as stenosing tenosynovitis , the tendon sheaths a tunnel-like structure that holds the tendon to the bone become inflamed and thickened, making it difficult for the tendon to smoothly glide through the sheath to bend the affected finger.
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Rest assured that the most common causes of finger-popping are not a problem at all. Many people can make their fingers pop, often called cracking their knuckles. The sound you hear is thought to be caused by air bubbles moving in the fluid that surrounds your joints. That being said, if your noisy finger joints are associated with pain or swelling, it's good to see your doctor for an evaluation. Tendon snapping is usually the result of a trigger finger.
Trigger Finger & Trigger Thumb
The ring finger is often one of the fingers affected. The condition is also known as stenosing tenosynovitis. - Back to Health A to Z. This can make it difficult to move the affected finger or thumb and can result in a clicking sensation.
I Think I Have a Trigger Thumb – What Can I Do About It?
Trigger finger is a condition that causes pain, stiffness, and a sensation of locking or catching when you bend and straighten your finger. The flexor tendons are long cord-like structures that attach the muscles of the forearm to the bones of the fingers. When the muscles contract, the flexor tendons allow the fingers to bend. Each of the flexor tendons passes through a tunnel in the palm and fingers that allows it to glide smoothly as the finger bends and straightens. The tendons pass through the pulleys as the finger moves.
The tendons act as cords that pull your fingers down into a fist and then relax as you straighten the fingers. Think of the tendon as a line on a fishing rod and the pulleys as the eyelets that keep the line in contact with the rod as it bends and straightens. A knot in the line may make the line catch as it is pulled through the eyelet. If the knot keeps getting larger or the pulley gets tighter, eventually it will be too large to slide back in the other direction and the line will be stuck. They simply get too large to move back and forth through the pulleys. Possible causes of trigger thumb are rheumatoid arthritis, gout, diabetes or an injury to the base of your thumb.