Fig. 4From: Surgical treatment of acromioclavicular joint dislocation of Rockwood III/IV: a retrospective study on clavicular hook plate versus arthroscopic TightRope loop titanium buttonThe ACJ gap (a) and CCJ distance (b) in HP group and TR group were compared. With the observation time, The ACJ gap and CCJ distance increased in both groups, There were significant differences between the two groups at 12 months after operation. *P>0.05, **P<0.05Back to article page