Pronator Quadratus

Pronator quadratus muscle

The pronator quadratus muscle pronates the forearm and helps the triceps muscle extend the elbow.

  • Origin: Distal quarter of the anterior side of the ulna.
  • Insertion: Distal quarter of the anterior side of the radius.
  • Actions: Pronation of the forearm
  • Innervation: Median nerve
  • Daily uses: Screwing in a screw with a screwdriver
  • Example stretches: Maximum supination of the forearm.
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