Question

Human can show supination and pronation of palm with the help of :-

(1) Hinge joint
(2) Gliding joint
(3) Ellipsoid joint
(4) Pivot joint
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Answer 1

Answer:(1)hinge joint...........

Answer 2

Answer: 4) Pivot joint

Explanation: Supination and pronation come under special movements.

• Supination -When the palm is facing forward the movement of the radius and ulna bones is Supination.
• Pronation- When the palm is facing backward the movement of the radius and ulna bones is Pronation. It is just the opposite of supination.

The elbow joint is where the radius and humerus articulate, which is a hinge joint. But the supination and pronation are due to radioulnar joints (both proximal and distal joints between radius and ulna) which is a synovial pivot joint.