Radical resection of a giant cell tumor of the distal ulna and reconstruction with a 3D-printed distal ulnar prosthesis: A case report.

Rationale: Giant cell tumors (GCTs) of the distal ulna are rare. Despite their benign nature, these tumors can exhibit local aggressiveness and have the potential to recur after undergoing conventional treatment involving curettage and bone grafting. For aggressive GCTs, radical resection is more suitable.