What is carpal metacarpal arthritis?
Carpal metacarpal arthritis is arthritis at the base of the thumb joint. In a normal joint, cartilage covers the ends of each bone providing smooth and easy movement between the two surfaces. The cartilage can wear out due to daily use and occurs throughout life. It can also be injured by traumatic events. When the cartilage is worn out and both ends of the bones rub against each other, it is called osteoarthritis. A common place for osteoarthritis to develop in the hand is the joint at the base of the thumb. This joint is formed by two bones called the trapezium and the first metacarpal. The joint provides a wide range of movement for the thumb. What are the signs and symptoms of carpal metacarpal arthritis? Symptoms of carpal metacarpal arthritis include pain at the base of the thumb while performing grasping or pinching motions. Generally, pain can be elicited while opening jars, turning a doorknob, or turning a key. Grip and pinch strength diminishes as the condition worsens and in
