The influence of different anatomical patterns of anterior inferior iliac spine on total hip arthroplasty in patients with femoral neck fracture
SUN Hao-jun
HAN Wen-feng
LIU Bin
WANG Zheng
WANG Ning
Abstract：Objective To explore the influence of different anatomical patterns of anterior inferior iliac spine on total hip arthroplasty in patients with femoral neck fracture.Methods A total of 123 patients with femoral neck fracture admitted to the Department of Orthopaedics of the General Hospital of the Northern Theatre from January 2018 to January 2021 were retrospectively analysed as study subjects.All patients underwent total hip arthroplasty and were divided into an impingement group(n=46)and a non-impingement group(n=77)based on whether or not impingement of the anterior inferior iliac spine occurred when the dislocation test was performed after the prosthesis was installed during the surgery.Patients were followed up for more than 12 months,and the two groups were compared in terms of the angle of subluxation during intraoperative flexion of the lower limb at 90° of internal rotation,the distance of upward movement of the centre of rotation,and the Harris score at the final postoperative follow-up.Results The internal rotation dislocation angles of patients in the impingement group and non-impingement group were(25.26°±5.89°)and(57.32°±9.91°),respectively,with statistical significance(P＜0.05).The internal rotation dislocation Angle of patients in the impingement group was(55.63°±4.90°)after the anterior inferior iliac spinoplasty,compared with that before the surgery,the difference was statistically significant(P＜0.05).After anterior inferior iliac spinoplasty,there was no significant difference in dislocation angle between the impingement group and the non-impingement group(P＞0.05).There was no significant difference in the distance of upward rotation center between the impingement group and the non-impingement group(P＞0.05).At the last follow-up,there was no significant difference in postoperative Harris scores in pain and function between the impingement group and the non-impingement group(P＞0.05).Conclusion Total hip replacement in patients with femoral neck fracture may cause impingement of the femur with the anterior inferior iliac spine during flexion and internal rotation.Intraoperative shaping of the anterior inferior iliac spine and anterior edge of the femur can effectively improve the postoperative joint mobility and reduce the rate of dislocation.
Keywords：Femoral neck fractureAnterior inferior iliac spineTotal hip arthroplasty
Publication Date：2024-08-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 233-236 )