Mid-term clinical and radiological outcomes of coracoclavicular ligament reconstruction with ZipTight Fixation System in the treatment of acute acromioclavicular joint dislocations

ABSTRACT Objectives: In this study, it was aimed to evaluate the mid-term clinical and radiological outcomes of coracoclavicular (CC) ligament reconstruction using knotless ZipTight fixation system in acute acromioclavicular (AC) joint dislocations. Methods: Twenty-seven patients who underwent surgery with ZipTight (Zimmer Biomet, Parsippany, NJ) fixation system were included in this retrospective clinical study. Twenty-three of the patients are male; 4 of them were female and the mean age was 32.9 ± 9.8. Ten patients had Rockwood type III and 17 patients had type V acute AC joint dislocation. Patients were evaluated clinically with Constant score, American Shoulder and Elbow Surgeons (ASES) score and visual analogue scale (VAS) pain score at the final follow-up. The radiologic assessment included standard anteroposterior views of the coracoclavicular (CC) distances. Results: The mean follow-up time was 36.2 ± 13.6 months. At the last follow-up, mean Constant score was 91.6 ± 6.18; the ASES score was 89.9 ± 6.3 and the VAS pain score was 0.33 ± 0.62. When they were divided into two subgroups as type III and type V AC joint dislocations, the two groups were found to be similar in terms of clinical outcomes (p > 0.889). CC distance measurements obtained in radiographic evaluation were measured as 20.04 ± 4.84 mm at preoperative period; it was 7.55 ± 0.78 mm in the early postoperative period and 7.76 ± 0.79 mm at the last follow-up. A statistically significant improvement was observed in the measurements in the early postoperative period compared to the measurements at preoperative period (p = 0.001). There was no significant difference between the measurements in the early postoperative period and those at the last follow-up (p = 0.001). Conclusions: In the treatment of acute AC joint dislocations, successful clinical and radiological outcomes can be obtained in the mid -term with CC ligament reconstruction using ZipTight fixation system. [Hand Microsurg 2021; 10(1.000): 29-36