Reconstruction of the posterior cruciate ligament with ligament advanced reinforcement system artificial ligament transplantation under knee arthroscopy / 中国组织工程研究

ABSTRACT

AIM: To observe the functional recovery of knee joint in patients with posterior cruciate ligament (PCL) under knee arthroscopy with ligament advanced reinforcement system (LARS) artificial ligament transplantation. METHODS: From January 2005 to May 2006, six patients with PCL injury treated by reconstruction of PCL with LARS artificial ligament transplantation were selected from the Department of Orthopedics, Huadu Hospital Affiliated to Southern Medical University. All subjects agreed with the operation before the surgery and all reconstruction surgeries were of second period. ① The tibial tunnel was established firstly. ② Then was the femoral tunnel. ③ Under knee arthroscopy, the "Y"-shape double cords of LARS artificial ligament were cut through ante-out and meta-in bone tunnels of femur, and fixed at 90o and 30o flexion respectively. Patients were required to motor 3 days postoperative, and patients actively exercised their quadriceps muscle of thigh at one week later. Regular follow-ups were conducted postoperatively, and functional evaluation of the knee joints was performed by according to Lysholm standards, including 8 aspects Limping, supporting, interlocking, unstable, painful, swell, upstairs and downstairs and squatting with a total score of 100 points. The higher the score was, the better the functional recovery of knee joint. RESULTS: All of the 6 patients were available at follow-up, and no one withdrew from the study. The follow-up was conducted at the 7th, 7th, 10th, 10.4th, 12.8th, and 14th months with an average duration of 10.2 months. After operation, unstable symptoms of knee joint in all subjects disappeared with negative sag sign and posterior drawer. The Lysholm knee scores of patients postoperation were significantly higher than those before the surgery (83.5?4.5, 51.6?3.6, P