Thumb Subluxation: Causes, Symptoms, and Treatment
A thumb subluxation is a partial dislocation of one of the thumb joints, where the bones shift out of their normal alignment but do not fully separate. This injury commonly affects the joint at the base of the thumb (the carpometacarpal joint) or the middle joint (interphalangeal joint), and often results from a fall, sports impact, or forceful twisting motion.
Symptoms include sudden pain, swelling, a feeling of instability, and difficulty gripping or pinching objects. In some cases, the joint may appear slightly crooked or may pop in and out of place. Unlike a full dislocation, a subluxation may return to position on its own but can still cause lasting discomfort or joint weakness.
Diagnosis is made through a physical exam and confirmed with imaging such as X-rays to check joint alignment and rule out associated fractures or ligament damage. Treatment typically includes rest, ice, immobilization with a splint or brace, and activity modification. In cases where the joint remains unstable or ligaments are torn, surgery may be needed to repair the supporting structures.
Most people recover well with proper treatment and rehabilitation. Slocum’s hand specialists offer expert care for joint injuries like thumb subluxations to help restore function and prevent long-term problems.