Before revision: Procedure 100px|The Krukenberg procedure separates the bony remnants of the forearm into a makeshift pincer.The procedure involves separating the ulna and radius for below-elbow amputations, and in cases of congenital absence of the hand, to provide a pincerlike grasp that is motored by the pronator teres muscle.
After revision: Procedure and radius for below-elbow amputations, and in cases of pincerlike grasp that is motored by the pronator teres muscle.