DefinitionBy Mayo Clinic Staff
Thumb arthritis is common with aging, and occurs when cartilage wears away from the ends of the bones that form your thumb joint — also known as the carpometacarpal (CMC) joint.
Thumb arthritis can cause severe pain, swelling, and decreased strength and range of motion, making it difficult to do simple tasks, such as turning doorknobs and opening jars. Treatment generally involves a combination of medication and splints. Severe thumb arthritis might require surgery.
May 14, 2015
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