评估和分析关节镜下保留残端的膝后交叉韧带单束重建的疗效。

选取2018年1月至2020年1月滨州医学院烟台附属医院收治的后交叉韧带损伤患者30例，关节镜下双后内侧入路下行保留残端的后交叉韧带单束重建术，术后1、3、6、12个月进行随访，1年后每年随访一次。配对样本t检验比较术前和末次随访时患者的后抽屉试验结果、KT-2000差值及Lysholm膝关节功能评分及术后并发症发生情况。

术前及末次随访结果比较，后抽屉实验结果均为阴性，KT-2000差值术前为(8.9±1.7)mm、术后12个月为(1.8±0.5)mm(t＝30.12，P<0.01)。Lysholm膝关节功能评分术前为(42.8±7.0)分，术后12个月为(85.5±5.0)分(t＝32.88，P<0.01)。IKDC膝关节功能评分术前为(52.3±1.5)分，术后12个月为(86.2±4.0)分(t＝51.93，P<0.01)。

关节镜下双后内侧入路保留残端重建后交叉韧带治疗后交叉韧带损伤近期临床效果显著，有效增强关节稳定性、提高膝关节活动度，改善膝关节功能。

To evaluate and analyze the effect of arthroscopic single bundle reconstruction of posterior cruciate ligament with preserved stump.

A total of 30 patients with posterior cruciate ligament injury were selected from Yantai Affiliated Hospital of Binzhou Medical College from January 2018 to January 2020. Arthroscopic single bundle reconstruction of posterior cruciate ligament with preservation of stump was performed by double posteromedial approach. The patients were followed up for 12 months and once a year after the operation. Paired sample t test was used to compare the results of posterior drawer test, KT-2000 difference, Lysholm knee function score and postoperative complications between preoperative and last follow-up.

Compared with the results of the last follow-up, the results of posterior drawer test were negative. The KT-2000 was(8.9±1.7) mm before operation and (1.8±0.5) mm 12 months after the operation(t=30.12, P<0.01). The Lysholm knee joint function score was(42.8±7.0)before the operation and (85.5±5.0)(t=32.88, P<0.01) at 12 months after operation. The IKDC knee joint function score was (52.3±1.5) before operation and (86.2±4.0) at 12 months after operation (t=51.93, P<0.01).

The arthroscopic double posterior medial approach to preserve the stump to reconstruct the posterior cruciate ligament is effective in the treatment of posterior cruciate ligament injury, which can effectively enhance the stability of the joint, improve the range of motion of the knee joint and improve the function of the knee joint.