Abstract
Acromioclavicular joint dislocation is a common shoulder injury, usually caused by direct violence on the shoulder. Optimal treatment of type III is still a hot discussion currently in orthopedic surgeons. With the advent of many flip-button techniques, Tightrope system and Endobutton system become popular techniques for reconstruction of coracoclavicular ligaments. The purpose of the study was to compare the clinical and radiological results between the two techniques. A retrospective case-control study was conducted in 60 patients with acute Rockwood III acromioclavicular joint dislocation. The two techniques conducted were open procedures using Twin Tail Tightrope system (Group A, n = 30) and Endobutton system (Group B, n = 30). 60 patients were followed up at least two years. Surgical parameters including incision length, operation time and operative blood loss were analyzed. Functional outcomes were evaluated using the Constant-Murley Score. Radiological results were assessed based on coracoclavicular distance preoperatively, one day postoperatively, and at the final follow-up. 60 patients were followed up for at least 24 months (range 24 to 32). The incision length and operation time were shorter in Group A than that in Group B. The blood loss of surgery was significantly less in the Group A. There were no significant differences between the two groups regarding the Constant-Murley Score at the final follow-up. No significant differences were found in the coracoclavicular distance preoperatively, immediately postoperatively, and at the final follow-up. Both techniques offered satisfying functional outcomes, however the Tightrope system provided better surgical parameters.
Highlights
Acromioclavicular joint (ACJ) injuries usually occur in a young active population and account for 12% of shoulder injuries[1]
A retrospective case-control study was performed in patients with acute Rockwood III acromioclavicular dislocation between April 2013 and May 2016
The inclusion criteria were as follows: (1) the acute injury of the ACJ. (2) acute ACJ that occurred less than 3 weeks. (3) radiological results showed Rockwood type III
Summary
Acromioclavicular joint (ACJ) injuries usually occur in a young active population (aged < 35 years) and account for 12% of shoulder injuries[1]. Type III is a rupture of both AC and CC ligaments accompanied by 25% to 100% CC distance increase. Type IV is a posterior dislocation of the lateral end of the clavicle into the trapezoid muscle. Type V is a superior dislocation of the lateral end of the clavicle accompanied by 100% to 300% CC distance increase. Conservative treatments are recommended for Rockwood type I and II, which have been described as low-energy trauma[3]. High-energy trauma as type IV to VI are treated operatively[4]. The purpose of the present study is to compare the clinical and radiological results of these two techniques for the treatment of acute Rockwood type III ACJ dislocations
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