Posterior interosseous artery distal ulna graft for management of radius nonunion: Technique and case report.

Distal radius fracture nonunion can result in significant deformity, loss of function, and chronic pain. Presented here is a case of distal radius nonunion that was surgically reconstructed with a pedicled distal ulna bone graft based on the periosteal branches of the posterior interosseus artery (PIA). This technique has limited prior utilization for adult distal radius nonunion treatment but offers an effective option for surgical reconstruction of distal radius nonunion with preservation of the radiocarpal joint, utilizing a less invasive surgery that also reduces hospitalization stay. The objective of this report is to provide the first illustrative step-by-step surgical technique for the vascularized distal ulnar bone graft technique and demonstrate its promising utility in clinical practice.