Arthroscopic Bone Graft and Internal Fixation of Non-Union of the Proximal Pole of the Scaphoid: Surgical Technique and Outcomes.

Abstract

Background Fractures of the proximal pole of the scaphoid have been associated with delayed union, non-union, and avascular necrosis. This has been attributed to avascularity of the proximal pole of the scaphoid. While proximal pole non-unions can be successfully treated using open techniques, there is little information in the literature regarding arthroscopic bone graft and internal fixation of proximal pole non-unions. Description of Technique After insertion of a 1.2-mm radiolunate K-wire, the scaphoid non-union was arthroscopically excised, bone grafted with iliac crest cancellous bone, and internally fixed with 3 × 1.2 mm K-wires. Patients and Methods This is a retrospective study of patients who had arthroscopic bone graft of non-union of the proximal pole of the scaphoid between 2009 and 2021. Results There were 30 cases in this study; 29 cases united. The one case that did not unite was caused by inadequate fixation of the proximal pole. The size of the proximal pole did not influence the outcome. Conclusion Arthroscopic bone graft and internal fixation is a reliable technique for the treatment of non-union of the proximal pole of the scaphoid.