抄録
Background: There are numerous methods of treatment of acromioclavicular dislocation. The object of our study was to investigate the results of acromioclavicular dislocations using ACJ plate ®, which is an anatomical hook plate.
Methods: The subjects were 23 patients who had acromioclavicular dislocation and were treated with ACJ plate in our hospital. The mean age was 40.3 years old. There were 4 cases of Rockwood type III, 1 case of type IV, and 18 cases of type V. The hardware was removed 6 months after fixation. The flexion angle and pain were investigated. The distance between clavicle and coracoid process (C-C distance) was measured in X-ray photos, which were taken before and after operation, just after removal of hardware, and at the last follow-up, 1 month after removal. By questionnaire, American Shoulder Elbow Score (ASES) and pain visual analog score (VAS) were investigated.
Results: The mean flexion angle was 143.1 degrees. In 3 of 5 cases in who motion pain remained, shoulder contracture remained. The mean C-C distance before and after operation, after removal, and at last follow-up was 17.4mm, 6.9mm, 8.2mm, and 10.2mm, respectively. In one case, cutout occurred. In 2 cases, the position of the plate was insufficient, and revision surgery was necessary. The mean ASES was 85.3. The mean VAS was 2.1.
Conclusion: In the measurement, the result of this procedure was satisfactory; however, there were similar clinical problem to other types of hook plate, such as shoulder contracture and cutout.
