Abstract:Objective To investigate the therapeutic effect of non-cemented femoral prosthetic replacement combined with intraoperative reconstruction of greater trochanter for unstable intertrochanteric fractures.Methods A total of 86 patients with unstable femoral intertrochanteric fractures who were treated in our hospital from July 2016 to June 2021 were selected, and were randomly divided into control group and study group, with 43 cases in each group. The control group was given non-cemented femoral prosthetic replacement, and the study group was given non-cemented femoral prosthetic replacement combined with intraoperative reconstruction of the greater trochanter. The patients were followed up for 6 months. The operation and fracture healing of the two groups were compared. The hip joint function of the two groups at 6 months after the operation was compared, and the femoral neck shaft angle and femoral anteversion angle at 6 months after the operation were also compared between the two groups. The indicators for bone metabolism in the peripheral blood of the two groups were observed. The lower limb function and ability of daily living before and after the operation were compared, and the incidence of postoperative complications in the two groups was analyzed.Results There was no significant difference in the operative duration and intraoperative blood loss between the two groups (P > 0.05). The fracture healing time of the study group was shorter than that of the control group (P < 0.05). The excellent and good rates of Harris Hip Scale scores in the study group were higher than those in the control group (P < 0.05). The differences of the levels of alkaline phosphatase (ALP) and bone morphogenetic protein-2 (BMP-2) before and 6 months after operation in the study group were higher than those in the control group (P < 0.05). The differences of Lower Extremity Functional Scale (LEFS) score and Barthel Index score before and 6 months after operation in the study group were also higher than those in the control group (P < 0.05). There was no significant difference in the femoral neck shaft angle and femoral anteversion angle between the two groups 6 months after operation (P > 0.05). Besides, there was no significant difference in the overall incidence of complications between the two groups (P > 0.05).Conclusions Non-cemented femoral prosthetic replacement combined with intraoperative reconstruction of greater trochanter is effective in treating the unstable intertrochanteric fractures. Specifically, the additional intraoperative reconstruction of the greater trochanter has more advantages in promoting fracture healing and improving hip joint function.