Aim Of The Study: The aim of this study was to evaluate union rate and clinical outcome in patients with proximal humeral nonunions treated by open reduction and locking plate fixation without bone grafting.
Methods: From 2011 to 2016, nine patients were treated using open reduction and locking plate stabilization without bone grafting. They were examined both clinically and radiologically, with a mean follow-up period of 31 months. Outcome was evaluated using pain and range of motion (ROM) parameters. In addition, self-assessment by patients was registered on the Disability of the Arm, Shoulder and Hand score, Constant-Murley Score, Oxford Shoulder Score, and American Shoulder and Elbow Surgeons Standardized Shoulder Assessment Form. A CT scan of the shoulder was performed to analyze union.
Results: At checkup, all patients showed union in the CT scans, where the mean ROM in abduction was 139° (SD 50°), in adduction 39° (SD 8°), in forward flexion 136° (SD 40°), in extension 44° (SD 11°), in internal rotation 62° (SD 15°), and external rotation 54° (SD 31°). ROM improved significantly in all planes of motion, except for adduction, post-surgery (p < 0.05). Plate removal was necessary in three patients. No complications were reported.
Conclusion: Open reduction and locking plate fixation without bone grafting is a reasonable and safe option for treating proximal humerus nonunion. It leads to a high union rate, significant improvement in ROM, and in the majority of the cases to an "excellent" and "good" functional outcome without an increased risk of complications.
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