同济大学学报（医学版）2023，Vol.44Issue(6)：829-834,6.DOI:10.12289/j.issn.1008-0392.23045
沿股骨转子间线环周皮质的CT影像学测量及临床意义
Clinical implications of 3D-CT measurement of oblique circumferential cortex along the intertrochanteric line
摘要
Abstract
Objective To analyze the clinical implications of 3D-CT measurement of oblique circumferential cortex along the intertrochanteric line in treatment of pertrochanteric hip fractures.Methods The CT images of 30 normal femurs of individuals aged＞60 years were collected and the three-dimensional reconstruction were made with Mimics software.The oblique intertrochanteric cortical section was intercepted along the intertrochanteric midline,and was divided into 12 equivalent segments by 30-degrees arc.The segments 6 and 7 represented the anteromedial cortical area.The thickness,area and gray value of the circumferential cortex were measured,and the cortical relative intensity was calculated by the density and area.Results The average thickness of the anteromedial cortex(segments 6 and 7)was(12.96±0.59)mm,while that of the rest segments was(5.80± 0.44)mm;the average area of the anteromedial cortex was(175.58±3.48)mm2,while that of the rest segments was(84.10±2.44)mm2;the average cortical intensity of the anteromedial cortex was(392.27±9.35)g/mm,while that of the rest segments was(145.48±4.51)g/mm.Although the length of anteromedial cortex accounted only one-sixth of the total length,its area accounted for 29.46％in the normal circumferential cortex,and accounted for up to 44.72％in the type A2 fracture model(separated posteromedial lesser trochanter fragments).The intensity of the anteromedial cortex accounted for 35.04％in the normal circumferential cortex,and accounted for up to 47.79％in the type A2 fracture model.Conclusion The cortex of anteromedial inferior corner is greater than that of the rest parts in terms of thickness,area,density and relative intensity,which indicates that the anteromedial cortex is the strongest part and reliable for cortical support reduction in pertrochanteric hip fractures.关键词
股骨转子间骨折/转子间线/环周皮质/前内侧皮质/皮质支撑复位/CT测量Key words
pertrochanteric fracture/intertrochanteric line/circumferential cortex/anteromedial cortex/cortex support reduction/CT measurement分类
医药卫生引用本文复制引用
王晓旭,张世民,胡孙君,杜守超,熊文峰..沿股骨转子间线环周皮质的CT影像学测量及临床意义[J].同济大学学报（医学版）,2023,44(6):829-834,6.基金项目
国家自然基金面上项目(81772323) （81772323）
