[目的]探讨关节镜下应用自体四股腘绳肌腱重建膝关节交叉韧带(ACL)的手术方法和疗效.[方法]关节镜下34例患者以自体腘绳肌腱作为ACL的重建替代物,两端分别应用纽扣钢板和可吸收螺钉固定.[结果]所有患者均得到平均10(6～20个月)个月的随访,Lachman试验除3例阳性外,其余均为阴性.所有患者轴移试验均为阴性.Lyshlom膝关节功能评分从术前的41.79±9.23分提高至术后90.59±15.33分,手术前后比较差异有显著性(P＜0.05).[结论]关节镜下自体腘绳肌腱移植重建前交叉韧带具有创伤小、并发症少等的优点,是恢复膝关节稳定性的可靠方法.“,”[Objective] To investigate the surgical techniques and treatment of arthroscopic reconstruction of anterior cruciate ligament (ACL) with four-stranded hamstring tendon autograft. [Methods] The arthroscopic reconstruction was performed in 34 cases of ACL injury. Button plate was used for the femoral tunnel fixation and bio-absorbable interference screw was used for the tibial tunnel fixation. [Results] All of the 34 patients were followed up for 6 to 20 months(10 months on average). Only 3 cases of 34 patients had positive Lachman test. The postoperative pivot shift test was negative in all cases. Lysholm score before operation was 41.79±9.23, and at the follow-up time it became 90.59±15.33. There was significantly difference(P＜0.05). [Conclusion] Four-stranded hamstring tendon autograft is a good method for arthroscopic reconstruction of ACL. It has advantages of simple operation, firm fixation and minimal invasion.