Adduction of thumb occurs at:: (A) Inter carpal joint, (B) MCP joint, (C) Carpometacarpal joint, (D) Inter phalangeal joint
Answer is C. C i.e. Carpometacarpal joint 1st carpometacarpal joint (cmj) is the only cmj with seperate joint cavity so the movements are much free. Flexion- extension (in the plane of palm), adduction - abduction (at right angles to the plane of palm), opposition & circumduction, movements of thumbQ take place at 1st CM Joint.