In the literature, the scapular neck fracture with ipsilateral acromioclavicluar dislocation(type I), mid-clavicular fracture(type II) or sternoclavicular dislocation(type III) is defined as floating shoulder. Authors managed 4 cases of type II floating shoulder, 3 cases by open reduction and internal fixation for the clavicular fracture only and 1 case by conservative therapy. The final results were excellent in 3 cases of the operative group and good in 1 case of the conservative group, by UCLA shoulder rating scale. There were no complications, including drooping or limited motion in the operative treatment group. However, there was shoulder pain in the case of the conservative treatment. It is thought that internal fixation for the clavicular fracture only may be the simple and sufficient treatment method for type lI floating shoulder.