Acromioclavicular joint injuries are frequently seen with increase of traffic & industrial accidents & sports injury recently, There are many procedures which described for the treatment of acromioclavicular dislocation, but there are still controversies concerning the best treatment of the injuries.

We have analysed 35 patients with acromioclavicular dislocations had been treated by modified Bosworth & Phemister technique at the department of orthopedic surgery Lee-Rha general hospital from June 1990 to December 1993 with minimal 1 year foll up

The authors had obtained following results as modified Phemister technique and modified Bosworth technique treatment for acromioclavicular joint.

1. The complications were as follows: superficial infection at insertion site of k-wire and migration of k-wire in modified Phemister technique and loosening of screw and erosion of clavicle noted in modified Bosworth tecnique. But, there were no specific difference between two groups for pain and motion of shoulder joint.

2. In modified Bosworth technique, it was not necessary to fix the acromioclvicular joint with k-wire and also possible to perform early mobilization of shoulder joint than modified Phemister tecnique.