Fig. 1

Simulating coracoid osteotomy to repair the bone defect. A1–A2 The red circle was the best-fitting ball from the healthy side glenoid mirrored to the affected side glenoid as the template. The grey plane was the coracoid cutting plane and glenoid bone fixation bed. B1–B2 Simulation drilling of Φ4.3 mm “screws” to determine its length and direction