First Carpometacarpal Joint (Trapeziometacarpal Joint)

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First Carpometacarpal Joint (Trapeziometacarpal Joint)
Primary Type Synovial Joint
Secondary Type Saddle Joint
Bones Trapezium, Metacarpal
Ligaments Capsule, anterior oblique, ulnar collateral, first intermetacarpal, posterior oblique, dorsoradial ligaments.
Muscles
Innervation Lateral antebrachial cutaneous nerve, palmar cutaneous branch of the median nerve, superficial radial nerve
Vasculature First dorsal metacarpal branch of the radial artery
ROM 53° of flexion/extension, 42° of abduction/adduction, and 17° of rotation
Volume
Conditions First Carpometacarpal Joint Osteoarthritis