BIOMECHANICAL ANALYSIS OF THE DYNAMIC HIP SCREW IN THE TREATMENT OF INTERTROCHANTERIC FRACTURES

被引:20
作者
WU, CC [1 ]
SHIH, CH [1 ]
机构
[1] CHANG GUNG MEM HOSP, CHANG GUNG MED COLL, DEPT ORTHOPED, TAOYUAN, TAIWAN
关键词
D O I
10.1007/BF00443464
中图分类号
R826.8 [整形外科学]; R782.2 [口腔颌面部整形外科学]; R726.2 [小儿整形外科学]; R62 [整形外科学(修复外科学)];
学科分类号
摘要
A prospective study was performed in 148 elderly patients (over 60 years old) whose intertrochanteric fractures were caused by moderate trauma. The patients were treated with dynamic hip screws and followed up for at least 2 years (average 34 months). The lag screw was placed as the biomechanical analysis favored. Follow-up showed that the majority achieved good union and were without mechanical failure. The authors conclude that a lag screw should ideally be placed inferiorly toward the medial margin in the frontal plane and centrally in the sagittal plane. The length of the lag screw should be such as to extend from 1.0 cm beneath the subchondral bone to the lateral femoral cortex. At least four cortical screws (piercing the cortex at eight points) should be inserted on the distal femoral fragment.
引用
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页码:307 / 310
页数:4
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