Thumb arthritis is common with aging and occurs when cartilage wears away from the ends of the bones that form the joint at the base of your.
The thumb interphalangeal (IP) joint is similar to the distal interphalangeal (DIP) joint in the fingers. The IP joint in thumb is located.
Thumb arthritis, or basal joint arthritis, affects the joint at the base of the thumb. It can cause pain and limit the thumb's range of movement.