Fig 36A-14. Krukenberg procedure. A, = humerus; B, = radius; C, = ulna. Crossed dotted lines at the antecubital fossa represent digitating V-flaps that will cross at the opening between the radius and the ulna. The solid line D represents an L-shaped incision on the volar aspect of the radial side (it should end 4 to 5 cm distal to the elbow), and line E represents an opposing L-shaped incision on the dorsum of the ulnar side.