Arthroscopic Treatment for Coronoid Process Nonunion of the Elbow.

The coronoid process of the ulna (CP) plays a crucial role in elbow stability by preventing posterior dislocation and resisting posterior muscular forces. Isolated CP of the ulna nonunions are rare but can lead to chronic instability, pain, and functional impairment. Traditional management relies on open techniques with internal fixation, but these approaches are invasive and risk fragment devascularization. With advances in arthroscopy, we describe a fully arthroscopic technique for treating CP nonunions using transosseous suture fixation with no bone graft. This minimally invasive approach offers a promising alternative by preserving periarticular structures while ensuring stable fragment fixation.