Abstract: Objective To discuss the treatment of acromioclavicular joint dislocation associated with clavicular distal end fracture and remedial means.Methods 28 cases of acromioclavicular joint dislocation associated with clavicular distal end fracture were treated with clavicular hook plate.28 patients included 4 cases of Allman's type Ⅰ,14 cases of type Ⅱ,10 cases of type Ⅲ.Classification of fracture included 9 traverse cases,14 oblique cases,3 comminuted cases,and 2 avulsion cases.There were 24 acute injury cases,4 obsolete injury cases.3 cases were open fractures.1 case was not successful by conservative management.After operation,early rehabilitation was emphasized and following-up was performed.The therapeutic effect was assessed with Karlsson standard.Results 28 patients were followed up for an average of 14.6 months(6～26 months).According to Karlsson standard:17 cases got A level,8 cases got B level,3 cases got C level.The rate of excellence was 89.3%.Conclusion Acromioclavicular joint dislocation associated with clavicular distal end fracture is not steady fracture and complicated with many ligaments avulsion often.Effective internal fixation on time and ligament repaired is necessary.

Key words: acromioclavicular joint, dislocation, clavicular distal end fracture, clavicular hook plate