Abstract:Objective To compare the curative effect of arthroscopic fixation of tibial avulsion fracture of posterior cruciate ligament with double thigh suture combined with Endobutton and open reduction.Methods The clinical data of 40 patients with tibial avulsion fracture of posterior cruciate ligament treated by these two methods in Lixian People's Hospital of Hunan Provincial People's Hospital Group from January 2017 to October 2021 were analyzed retrospectively. The patients were divided into arthroscopy group (n = 20) and open reduction group (n = 20) according to the mode of operation. The knee joint IKDC score, Lysholm score, operation time, blood loss, incision length and hospital stay were compared before and 12 months after operation.Results The operations of the two groups were successfully completed without vascular nerve injury, and the postoperative wounds healed by first intention. The IKDC knee joint scores of the arthroscopic group and the open reduction group were (93.67 ± 2.07) points and (92.16 ± 3.18) points at 12 months after operation, respectively.) points, which were improved compared with (42.52 ± 5.54) points and (42.89 ± 6.71) points before operation (P < 0.05). The Lysholm knee function scores in the arthroscopic group and the open reduction group were (95.40 ± 1.10) and (94.60 ± 2.11) at 12 months after operation, which were higher than those before operation (36.75 ± 6.63) and (37.35 ± 6.43) (P < 0.05). There was no significant difference in the IKDC score and Lysholm score between the arthroscopic group and the open reduction group at 12 months after operation (P > 0.05). The operation time, blood loss, incision length, and hospital stay in the arthroscopic group were all shorter than those in the open reduction group (P < 0.05).Conclusion Arthroscopic fixation of tibial avulsion fracture of posterior cruciate ligament with double thigh suture combined with Endobutton has the advantages of relatively simple and feasible operation, safe and minimally invasive, and quick functional recovery of knee joint compared with open reduction and fixation.