Abstract: Objective To investigate the clinical effect of reconstruction of coracoclavicular ligament with suture anchor and absorbable suture combined with clavicular hook plate in the treatment of old acromioclavicular joint dislocation. Methods A retrospective study was adopted, a total of 60 patients with old acromioclavicular joint dislocation who were admitted to Wuwei People’s Hospital from October 2020 to February 2022 were selected and divided into observation group (coracoclavicular ligament reconstruction combined with clavicle hook plate) and control group ( Simple acromioclavicular joint debridement and fixation) 30 cases in each group. The operative efficacy, operative time, postoperative recovery, Constant-Murley score of shoulder joint function, visual analogue scale (VAS) score, coracoclavicular distance (CCD) and acromioclavicular space (ACD) were compared between the two groups. Results The excellent and good rate of the observation group was 96.67% (29/30), which was significantly higher than that of the control group, 73.33% (22/30), the difference was statistically significant (P<0.05). The operation time of the observation group was longer than that of the control group, the difference was statistically significant (P<0.05). The Constant-Murley score of the observation group was significantly higher than that of the control group, the difference was statistically significant (P<0.05). The VAS score was significantly lower than that of the control group, the difference was statistically significant (P<0.05). There was no difference in CCD and ACD between the two groups (P>0.05). Conclusion The reconstruction of coracoclavicular ligament with suture anchor and absorbable suture combined with clavicular hook plate is effective in the treatment of old acromioclavicular joint dislocation. It can effectively promote fracture healing, restore shoulder function as soon as possible, reduce pain, and have fewer complications, which is worthy of clinical application.

Key words: old acromioclavicular dislocation, suture anchor, absorbable suture, coracoclavicular ligament, clavicular hook plate