“…According to the Rockwood classiication, 351 type III, 41 type IV, 229 type V and one type VI AC joint dislocations were included. Time from injury to surgery was more than 2 weeks in four studies [14][15][16]70], more than 1 month in six studies [19,22,39,58,59,68], more than 6 weeks in 10 studies [5,11,27,29,30,37,46,50,51,54], more than 3 months in 11 studies [1,2,6,8,10,28,33,[63][64][65], more than 6 months in 11 studies [10,18,24,25,34,43,44,47,62,63,67], and not reported in one study [31].…”