Analysis of the effect of LARS artificial ligament double ring reinforcement technique in repairing chronic acromioclavicular joint injury
WANG Tao-ran
GAO Jia-kai
HE Xiang
BI Long
Abstract：Objective To investigate the clinical effect of LARS artificial ligament double ring reinforcement technique in repairing chronic acromioclavicular joint injury.Methods A total of 6 patients with chronic acromioclavicular joint injury admitted to the First Affiliated Hospital of the Air Force Medical University from January 2023 to January 2024 were selected,and the coracoclavicular ligament was reconstructed by LARS artificial ligament double ring reinforcement technique to restore shoulder function.Operation time,intraoperative blood loss and complications were recorded.Imaging examination and coracoclavicular distance were recorded at the preoperation and the last postoperative follow-up.The numerical rating scale( NRS),disabilities of the arm,shoulder and hand( DASH) score and Constant score were evaluated at the preoperation and the last postoperative follow-up.Results In this group,the operative time was ( 60.8±6.7 ) min,the intraoperative blood loss was ( 51.7±23.4 ) ml,and the wound healed within 2 weeks after the surgery.The patients began functional exercise at two weeks after the surgery,and all 6 cases were followed up regularly for (7.8±2.4)months (6-13 months) .No complications such as neurovascular injury,infection and joint stiffness were found.One case showed signs of loosening of the squeeze screw.The patient felt pain on shoulder,and recovered well after the squeeze screw removed at 6 months after the surgery.At the last postoperative follow-up,all patients felt fine without obvious pain,and X-ray images showed no signs of acromioclavicular dislocation.At the last follow-up,the coracoclavicular distance decreased,while the NRS score,DASH score and Constant score were improved compared with those before the surgery,with statistical significance(P<0.05).Conclusion LARS artificial ligament double ring reinforcement technique for repairing chronic acromioclavicular joint injury can achieve good short-term and medium-term fixation effect.However,it is necessary to pay attention to the operational details such as the drill direction and the method of ring ligature to avoid postoperative complications.
Keywords：LARS artificial ligamentDouble ring reinforcement techniqueAcromioclavicular joint injuryChronic
Publication Date：2024-06-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 168-172 )