The Use of a Vascularized Distal Ulna Autograft for Complex Distal Radius Fracture Nonunions.

In patients with segmental nonunion of the distal radius, the distal ulna and distal radioulnar joint may not be salvageable. As an alternative to a vascularized free fibula, a pedicled distal ulna vascularized graft is a useful salvage technique. The procedure relies on the vascular bundle of the pronator quadratus and the dorsal oblique arterial anastomosis between the anterior and posterior interosseous arteries running along the interosseous membrane as the pedicle. We present 3 patients who received a distal ulna vascularized graft with concomitant wrist arthrodesis for distal radius segmental nonunion after complex distal radius fracture. This technique provides a local pedicled graft that may be a simpler, more reliable, and less technically demanding alternative.