CAJ | 학술논문

为准确评估人体自身因素对人工髋关节稳定性的影响程度，以人工髋关节稳定性为控制目标，考虑人体骨头密度、人体质量、行走步长、身高与抬脚高度等5个因素，运用人体生物力学与弹性力学知识，建立人工髋关节微动位移数学模型。基于敏感性分析原理，在 Matlab 中绘制控制目标对各影响因素的敏感度曲线图，并对结果进行数据拟合得到各影响因素的敏感度函数表达式，在5个因素均取人体基准值的情况下，通过函数表达式可分别求出控制目标对各因素的敏感度值以及各影响因素的影响百分比。结果表明，在上述5个因素中，人体骨头密度对人工髋关节稳定性的影响程度最大，其后影响程度依次为行走步长、人体质量、抬脚高度与身高。研究人体骨头密度、人体质量、行走步长、身高和抬脚高度对人工髋关节稳定性的影响程度，对临床安装人工髋关节有很好的指导意义和借鉴作用。
위준학평고인체자신인소대인공관관절은정성적영향정도，이인공관관절은정성위공제목표，고필인체골두밀도、인체질량、행주보장、신고여태각고도등5개인소，운용인체생물역학여탄성역학지식，건립인공관관절미동위이수학모형。기우민감성분석원리，재 Matlab 중회제공제목표대각영향인소적민감도곡선도，병대결과진행수거의합득도각영향인소적민감도함수표체식，재5개인소균취인체기준치적정황하，통과함수표체식가분별구출공제목표대각인소적민감도치이급각영향인소적영향백분비。결과표명，재상술5개인소중，인체골두밀도대인공관관절은정성적영향정도최대，기후영향정도의차위행주보장、인체질량、태각고도여신고。연구인체골두밀도、인체질량、행주보장、신고화태각고도대인공관관절은정성적영향정도，대림상안장인공관관절유흔호적지도의의화차감작용。
In order to evaluate the influence of human body factors on stability of hip prosthesis accurately, some factors such as bone density of human body, body mass, walking step size, the height of human and the size of lifted foot are considered. Mathematical model of micro displacement of hip prosthesis is set up, applying the knowledge of human biomechanics and elasticity mechanics, with which the objective of stability of hip prosthesis is concerned. Sensitivity curves of influence factors are drawn in Matlab based on principle of sensitivity analysis. Meanwhile, each sensitivity function expression of factors is obtalned through fitting the data in curves. The sensitiveness of objective and influential percentage of each factor is obtalned with basic value of five factors above. The results show that the greatest influence on stability of hip prosthesis is bone density of human body, followed by walking step size, body mass, the height of human and the size of lifted foot. It is good to be given instruction and reference for clinical use of hip prosthesis to research on the influence of bone density of human body, body mass, walking step size, the height of human and the size of lifted foot.