Pre-sliding technique to improve femoral neck system against the shortening: a retrospective cohort study

Abstract

Abstract Objective To investigate the efficacy of using pre-sliding technique to prevent postoperative shortening of displaced femoral neck fracture fixed with femoral neck system (FNS). Methods Retrospective analysis of 110 cases of displaced femoral neck fracture treated with femoral neck system from September 2019 to November 2022 in our center, which were divided into 56 cases in the pre-sliding group and 54 cases in the traditional group. The baseline data such as gender, age, side, mechanism of injury, fracture type, operation time, intraoperative bleeding were recorded and compared between the two groups, and the quality of fracture reduction, shortening distance, Tip Apex Distance (TAD), union time, Harris score of the hip were also compared between the two groups. Results The TAD value of the pre-sliding group was smaller than that of the traditional group, and the difference was statistically significant (P 0.05), and no statistically significant difference in fracture healing time between the two groups (P = 0.113). Conclusion The use of the pre-sliding technique of displaced femoral neck fracture fixed with FNS reduces the incidence of moderate and severe shortening, improves the postoperative TAD value, and improves the hip function scores, with a satisfactory midterm efficacy.

Keywords

• Femoral neck fracture
• Fracture fixation, Internal
• Femoral neck system
• Femoral neck shortening
• Pre-sliding