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.