Supination and pronation of upper limb is due to:: (A) Wrist joint, (B) Radio-ulnar joint, (C) Elbow joint, (D) Carpometacarpal joint
Answer is B. Ans. (b) Radio-ulnar jointRef.: BDC 6th ed. vol. I /153-154; Clinically Oriented Anatomy by Keith, Moore, 5th ed/ 865* During Supination radius rotates laterally and palm laces anteriorly* During pronation, radius rotates medially and palm faces posteriorly* This movement takes place around distal radio-ulnar joint.