The glenohumeral dislocation should be reduced promptly. If closed reduction is successful, definitive treatment of the proximal humeral fracture can be delayed for a few days, if necessary.
Reduction of the humeral head may be difficult. Anesthesia with good muscle relaxation may be necessary. Open reduction/internal fixation may begin with an attempt at closed reduction, typically under anesthesia. Alternatively, the surgeon may proceed directly to open reduction.