The purpose of this study was to review the results of surgical treatment with modified Neviaser's method for a grade 3 dislocation of the acromioclavicular joint. In our modified Neviaser's method, a bone fragment at the attachment of the coraco-acromiaryok ligament was fixed to the clavicle by a K-wire which was inserted to the hold the acromioclavicular joint. This study involved fourteen patients (thirteen males and one female) with a mean age at surgery of thirty years old. The duration from injury to operation was ten days on average and that of follow- up was ten months on average. The clinical results were evaluated by Kawabe's score and the Japan shoulder society(JSS) score for an acromio-clavicular dislocation. Postoperative evaluation was 95 points( excellent tweleve, good two ) in Kawabe's score, and 96 points in the JSS score (excluding the X-ray points). There were the cases which had a shoulder pain. There were six patients who had mild subluxation in X-ray postoperatively. The ranges of motion of the shoulder was full in all cases, but the calcification of the coraco-clavicular ligament was observed in twe patients. Our modified method showed satisfactory clinical results, and the rigid fixation of the coraco-acromiar ligament could make it possible to start range of motion active exercise immediatety after surgery.
