• 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