To investigate the clinical effect of double incision double plate reduction and internal fixation on the internal and external sides of knee joint in patients with complex tibia plateau fracture.

From February 2016 to may 2018, 64 patients who met the diagnostic criteria of complex tibial plateau fractures and did not have fractures in other parts were selected. According to the different operation methods, they were divided into the study group (29 cases) and the control group (35 cases). The patients in the control group were treated with unilateral locking plate internal fixation, while the patients in the study group were treated with knee joint internal fixation. The follow-up observation was carried out at six months and one year after the operation. Chi-square test was used to analyze the excellent and good rate of postoperative recovery and the complications, operation related indexes, postoperative healing time, Rasmussen knee joint score, tibial plateau angulation degree and tibial plateau angulation degree of the two groups were compared by t test.

The excellent rate of the patients in the study group was significantly higher than that in the control group (χ²=12.874, P<0.05). There was no significant difference between the study group and the control group in the amount of intraoperative bleeding, operation time or incision length (P>0.05). The fracture healing time, the time of starting weight-bearing and the time of starting exercise of the study group were significantly shorter than the control group (t =8.327, 10.528, 13.539, P<0.05). Six months and one year after operation, the Rasmussen knee joint score of the study group was significantly higher than the control group (t=7.04, 6.60, P<0.05). One year later, the tibial plateau caster angle and the degree of varus angle in the control group were significantly higher than that in the study group (t=-2.22, -7.63, P<0.05). The total incidence of complications in the study group was significantly lower than that in the control group (t=10.326, P<0.05).

The effect of double-incision double plates internal fixation on the internal and external sides of knee joint is remarkable in complex tibia plateau fractures, which can effectively promote the recovery and reduce postoperative complications, and is worthy of clinical application.