The 1st CMC (carpometacarpal) joint is a specialized saddle-shaped jointat the base of the thumb. The trapezium carpal bone of the wrist and the first metacarpal bone of the hand form the 1st CMC or thumb basal joint. Are metacarpophalangeal joints your knuckles? The metacarpophalangeal join...
The palmar surface of the scaphoid is concave, and forming a tubercle, giving attachment tothe transverse carpal ligament. The proximal surface is triangular, smooth and convex, and articulates with the radius and adjacent carpal bones, namely the lunate, capitate, trapezium and trapezoid. What b...