To investigate the possibility of resection arthroplasty of the sternoclavicular joint in treatment of dislocation of this joint.Methods:Five patients who had had resection arthroplasty of the sternoclavicular joint and in whom the costoclavicular ligament had to be reconstructed,follow-up averaged 1.8 years.Results:The average duration of follow-up were 1.8 years.All of the patients had an excellent result,no cases had infection、pain and abnormalities.Conclusion:We believe that resection arthroplasty of the sternoclavicular joint and preservation reconstruction of the costoclavicular joint is essential,and it is a satisfactory and safe way for the treatment of dislocation of the sternoclavicular joint.