摘要
目的:通过CT测量正常国人股骨大体形态参数,为假体设计提供解剖学理论依据。方法:60例国人进行股骨近端CT扫描,利用医学图像处理软件对股骨头直径、offset、头位置、颈干角、皮质厚度及闪烁系数(canal flare index,CFI)等参数进行测量、比较。结果:①小转子区域,均可见到自后内侧股骨距部突出的皮质骨样板状结构,对于维持生物固定型假体的稳定起着十分重要的作用;②股骨参数与白种人相比较,在offset、股骨头中心位置及颈干角等参数间存在明显差异(P<0.01);③截骨平面股骨内径与股骨近端及峡部内径有很强的相关性;④年龄与皮质厚度有强的相关性(r=0.6601,P<0.01),随着年龄增长,髓腔内径逐渐增大;⑤干骺闪烁系数(metaphyseal canal flare index,MCFI)对于股骨近端形态变化的描述更为合理。结论:股骨形态复杂多样,有必要设计符合国人的假体,提出与假体相关的设计理念。
Objective: To obtain the parameters of the morphology of the proximal femur through the CT in order to provide the anatomical basis for the prosthesis design. Methods: The data of 60 healthy Chinese proximal femurs were obtained from the PHLLIP SR7000 CT machine. Eighteen parameters including offset, location of the femoral head, neck-shaft angle, canal flare index and so on were measured exactly by medical imaging softwara Results: The dense trabecular ridge protruding endosteally from the posteromedi-al cortex could be seen in the calcar femoral region in all femoral which is important to keep the cementless prosthesis stable. All the measurements were statistical analysis. Compared with the Caucasian several Chinese femur parameters were significantly different. The isthmus width correlated fairly well with the medio-lateral width at the level of 20 mm above the lesser trochanter midpoint. Age strongly correlated with the thickness of the cortex It was better to describe the diversity of the proximal femoral medullary canal with the metaphyseal canal flare index (MCFI) than with the canal flare index (CFI). Conclusions: The shape of the femoral canal is variable and it is necessary to design the femoral prosthesis fitting the features of the femur of the Chinese. The authors also bring forward relative idea for the prosthesis design.
出处
《中国临床解剖学杂志》
CSCD
北大核心
2003年第2期125-128,共4页
Chinese Journal of Clinical Anatomy
关键词
股骨
测量
CT
假体
femur
measurement
computer tomography
artificial limb
