- Joints of hand
- first carpometacarpal joint
- Type
- Saddle
- Articular surface
- Distal surface of trapezium
- Proximal surface of base of first metacarpal bone
- Ligaments
- Capsular ligament
- Lateral ligament
- Anterior ligament
- Posterior ligament
- Relations
- Anteriorly
- Covered by muscles of thenar eminence
- Posteriorly
- Long and short extensors of thumb
- Medially
- First dorsal interosseus muscle , radial artery
- Laterally - tendon of abductor pollicis longus
- Blood supply
- Radial vessels supply blood to synovial membrane
- Nerve supply
- First digital branch of median nerve
- Metacarpophalangeal joints
- .ellipsoid
Discussion