Pain in the metacarpophalangeal joint of the thumb | Pain in the thumb joint
Pain in the metacarpophalangeal joint of the thumb The thumb base joint is the joint between the first metacarpal bone and the first phalanx of the thumb. It should not be confused with the thumb saddle joint, which forms the transition from the carpus to the metacarpus. Pain in the metacarpo-phalangeal joint of the thumb … Pain in the metacarpophalangeal joint of the thumb | Pain in the thumb joint