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The radiocarpal joint is a synovial joint thatâs also found in the wrist. The radius articulates with the first row of carpal bones, except for the pisiform. It has a fibrous joint capsule thatâs attached to that distal end of the radius and the ulna and to the carpal bones.
The scaphoid bone is one of eight small bones in the wrist, called carpal bones. These bones allow complex, yet delicate movements of the hand and wrist. The carpal bones fit between the bone of the forearm and hand. The scaphoid sits below the thumb, and is shaped like a kidney bean.