origin: distal 1/4 of the volar (ant) surface of the ulna;
insertion: distal 1/4 of the volar surface of the radius;
action: pronates the forearm;
nerve supply: Median , C7 , C8 , T1 ;
synergists: Pronator Teres
Stabilization of the distal ulna by transfer of the pronator quadratus origin.
Original Text by Clifford R. Wheeless, III, MD.
Last updated by Data Trace Staff on Monday, December 12, 2011 3:53 pm