Several treatment methods for complete acromioclavicular(AC) joint dislocation have been recommended. This study was performed to evaluate the results of the injuries that had been treated operatively with Bosworth technique combined with coracoclavicular ligament reconstruction using coiacoacromial ligament. Between September 1992 and October 1995, 19 cases were treated with this method. We made an assessment of the results suggested by Taft. Subjectively, fifteen patients had no pain or stiffness. 17 patients had normal strength and full range of motion objectively. On the roentgenographic bases, 16 cases showed normal findings and one showed the subluxation of the AC joint. The overall Taft score was 10.8 points and 84 % of the patients showed good or excellent results. The advantages of this method include anatomical reduction of the AC joint and early motion of shoulder. Ligament reconstruction enables early removal of the lag screw which precludes joint stiffness and metal problems. We conluded that this method was a good surgical method for complete AC joint dislocation.