There are many procedures described for the treatment of complete acromio-clavicular dislocationn but there are still controversies concerning the best management of these injuries. Surgical treatment modalities for complete acromio-clavicular dislocation are variable and usually successful. The fiftheen cases were treated at the Department of Orthopedic Surgery, Kyungpook National University Hospital, from January 1990 to July 1993. And they had been followed for average 22 months. The following results were obtained.

1. According to classification by Rockwood and Green. Grade li[ were 7 cases and Grade V 8 cases.

2. Of the 15 cases,2 cases were treated by conservative method, and 13 cases by operative mothods.

3. The clinical results according to Weitzmans criteria were excellent in 9 cases(60%), good in 4 cases(26.7%) and fair in w cases(13.3%).

4. The complications were pin migration, breakage, loosening, calcification of coraco-clavicular joint in 1 case respectively and recurrent dislocation after pin removal in 2 cases.

5. We thought that the operative procedures are indicated in the treatment of type III & V complete dislocation of acromio-clavicular joint.