[Late clinical and roentgenologic results following surgical treatment of chronic shoulder dislocation using Lange's technic].

In German speaking countries the M. Lange procedure is a well known method in the treatment of recurrent shoulder dislocations. In order to study the longterm results 21 shoulder joints of 20 patients were examined clinically and radiologically after an average postoperative period of 13.5 years. According to the subjective judgment of the patients good results were obtained in 19 of the 21 cases. True recurrent dislocation occurred in 5.2%. In 57% of the cases signs of degenerative arthritis of the shoulder joints were found radiologically. Our examination shows that the M. Lange procedure is a reliable method with good longterm results. It should be used in cases of glenoidial dysplasia and in cases of a defect of the anterior glenoid rim.