[Comparative study on posterior cruciate ligament reconstruction with autologous hamstring tendon and LARS artificial ligament in the treatment of KD-â ¢-M knee dislocation].

OBJECTIVE: To observe the curative effect of one-stage reconstruction of anterior cruciate ligament(ACL), posterior cruciate ligament (PCL) and medial collateral ligament (MCL) in patients with KD-Ⅲ-M knee injury, and to compare the operation time, hospitalization cost and curative effect after arthroscopic reconstruction of PCL with LARS artificial ligament and autogenous hamstring tendon, ACL reconstruction with autogenous hamstring tendon and MCL repair combined with limited incision. METHODS: From March 2016 to January 2019, a total of 36 patients met the criteria of this study. Twenty patients in group A were treated with autogenous hamstring tendon reconstruction of ACL and PCL and repair of MCL, including 17 males and 3 females, with an average age of (34.7±9.2) years old. Sixteen patients in group B with LARS artificial ligament reconstruction of PCL, with an autogenous hamstring tendon reconstruction of PCL and MCL repair as before as group B, including 15 males and 1 female, with an average age of (36.8±8.6) years old. The operation time, hospitalization time and total hospitalization cost were compared between the two groups. The preoperative and postoperative functions of the two groups were evaluated by Hospital for Sepcial Surgery (HSS) score and Lysholm score respectively, and the curative effects were compared within and between groups. RESULTS: All the patients in the two groups were followed up for at least 1 year. There were no complications such as infection and poor wound healing in both groups. There was significant difference in operation time between (120.25±9.55) min in group A and (106.63±8.85) min in group B (P<0.01). The average hospitalization days in group A was (10.60±1.64) days, while that in group B was (10.38±1.59) days. There was no significant difference between the two groups (P>0.05). The HSS score of group A increased from preoperative 32.95±5.03 to postoperative 84.70±5.72 (P<0.01), and that of group B increased from preoperative 33.81±4.10 to postoperative 85.00±5.25 (P<0.01). The Lyshlom score in group A increased from preoperative 21.10±3.46 to postoperative 80.25±5.75 (P<0.01), and in group B increased from preoperative 21.56±3.01 to postoperative 80.00±4.30(P<0.01). There was no significant difference in preoperative and postoperative scores between the two groups(P>0.05). CONCLUSION: There was no significant difference in the average hospitalization days between the two groups, but the operation time in group A was longerthan that in group B, and the hospitalization cost in group B was higher than that in group A. There was no difference in HSS score and Lysholm score before and follow-up for a certain period of time after operation.