Thumb Arthritis

Thumb arthritis is a common form of osteoarthritis that develops when the cartilage in the carpometacarpal joint at the base of the thumb wears down.

Thumb arthritis is a common type of osteoarthritis caused by cartilage loss in the carpometacarpal joint at the base of the thumb. It often presents with pain during gripping, pinching, and tasks such as opening jars. Because it can significantly affect daily hand function, it should be evaluated differently from simple nonspecific hand pain. ^[1][2]

The most typical symptom is pain at the base of the thumb. Swelling, tenderness, stiffness, weakness, and limited movement may accompany it. In more advanced cases, a bony prominence and joint deformity may develop. ^[1][3]

Advancing age, repetitive hand use, prior injuries, and female sex are important risk factors. Occupations or hobbies that strain the joint may worsen symptoms. Still, not every thumb pain problem is arthritis; tendon disorders and nerve entrapment can cause similar complaints. ^[1][2]

Diagnosis is based on examination and, when needed, X-rays. Compression or grind tests during the examination may reproduce the pain. Imaging may show joint-space narrowing and bony changes, although clinical symptoms and radiographic stage do not always match exactly. ^[1][4]

First-line treatment includes rest modification, splinting, activity adjustment, and pain control. Hand therapy exercises, strengthening, and joint-protection techniques can improve function. In some patients, injections may be considered. In advanced and resistant cases, surgical options may come into play. ^[1][2]

In daily life, it may help to use kitchen tools with larger handles, avoid holding a phone for long periods with the thumb, and distribute force to the other fingers. The goal of treatment is not only to reduce pain but also to preserve hand function. ^[1][3]

If pain is accompanied by redness, fever, sudden swelling, or trauma, other causes should be investigated. Pain that wakes a person at night or worsens rapidly also warrants evaluation. ^[1][2]

In summary, thumb arthritis is a common but manageable hand-joint problem. Early use of appropriate splinting, exercises, and activity modification can meaningfully preserve quality of daily life. ^[1][4]

Prompt evaluation is a safer approach, especially when alarm symptoms are present.