抄録
The aim of this study was the outcome of surgical treatment for an unstable distal clavicle fracture (Neer's type II) using a Wolter clavicular plate (W-plate) and BEST acromioclavicular plate (B-plate) which were compared. The subjects were 28 patients, (W-plate : 17, B-plate : 11) whose mean age was 39 years old. The postoperative follow-up period ranged from 8 to 32 months (mean, 15.5 months). The postoperative results were evaluated by JOA score. Bone union was achieved in all patients. In the W-plate group, the hook hole on the acromion was enlarged in all patients. In the B-plate group, the hook region impingement, occurring in 4 patients, when the arm was raised. The JOA score was 82-100 points (mean, 97.6 points) in the W-plate group and 76-100 points (mean, 93.4 points) in the B-plate group, showing no statistically significant intergroup difference. The plate should be removed as soon as the union is completed, because an acromial fracture may possibly occur due to the enlargement of the hook hole when a W-plate is used, and because the hook region of a B-plate leads to a high incidence of impingement of the hook region when the arm is raised.
