The purpose of this report is to discuss the results of 7 cases of glenoid fracture of the scapula with over 50% bone fragment, which were classified as Ideberg type I and treated with arthroscopy. Seven cases of glenoid fracture of scapula classified as Ideberg type I were treated with arthroscopy from January, 2007 through March, 2009. The average age was 55 years old and there were 2 females and 5 males. We examined whether they had dislocations or not and fragment size, fixed method, and operation time. We also examined the bone union and postoperative results (following JOA score). We used suture anchor and the poly - L - lactic acid pin (following PLLA) as fixed materials. Three cases had dislocations and 4 cases had only bone fractures. The fragment size with dislocation was an average of 57%, and that with only bone fracture was an average of 63%. Three cases were treated with PLLA or PLLA + suture anchor, and 4 cases were treated with only suture anchor. We needed 108 minutes on average for operation time. All cases had bone union and JOA score was an average of 93.8 points. We treated the glenoid fracture by open reduction and fixation with the Delto - pectoral approach in the past, but they were highly invasive methods and several patients fell into contracture. Lately we treated patients by using arthroscopy. It is possible to operate with lower invasion and we got comparatively good results.
