Sixty cases of acromioclavicular dislocation were evaluated after Weaver and Dunn procedure with mean follow up of 2 year and 1 month.

The following conclusions were obtained.

1. Among 60 cases, there were 54 males and 6 females (M:F=14:1).

2. In terms of age distribution. third and fourth decades of age were most Common (75%).

3. causes of injury were traffic accidents in 30 cases, sports Injuries In 24 cases, and falling down injuries in 6 cases.

4. Associated injuries were head injuries in 15 cases. chest injuries in 10 cases. spine injuries in 3 cases, limb fractures in 4 cases, ipsilateral clavicle fractures in 2 cases and ipsilateral coracoid fractures in 2 cases.

5. Interval between injury and operation was within 1 week in most cases (40 cases, 65.7%).

6. When compared to the normal side, the distance of acromioclavicular joint was 110% and the coracoclavicular distance was 9mm.

7. According to Imatani criteria, excellent result were obtained in 12 cases, good in 39 cases, fair in 6 cases, and poor in 3 cases.

8. Complications were skin infection in 3 cases and displacement of distal clavicle in 3 cases.