摘要
股骨头坏死是常见的难治性疾病,旋转截骨术是保留股骨头手术治疗股骨头坏死的主要方法。用有限元法分析旋转截骨术手术前后人体骨骼力学特性,评估手术有效性和准确性,为提高手术疗效奠定基础。采集1例患者的髋关节CT图像,通过3D模型提取和优化,建立术前术后有限元模型,得到术前术后的应力变化情况。股骨应力分布情况表明:术后应力最大处从股骨头坏死处重新转移回股骨干,手术前后坏死区下方等效应力最大值分别为27.04,10.97 MPa,减小明显,为后续保守治疗提供了有利条件。
Femoral head necrosis is a common and refractory disease.Rotary osteotomy is the main method to preserve the femoral head for treatment of femoral head necrosis.The finite element method was used to analyze the mechanical properties of human bones before and after rotary osteotomy,to evaluate the effectiveness and accuracy of the surgery,and to lay a foundation for improving the curative effect and popularization of the surgery.CT images of hip joint of a patient were collected,and the finite element model before and after operation was established through 3D model extraction and optimization to obtain the stress changes before and after operation.The stress distribution of femur shows that the maximum stress area transfers back to the femoral shaft from the necrosis of the femoral head after surgery,and the maximum values of equivalent stress below the necrotic area before and after surgery are 27.04,10.97 MPa,re-spectively,which decrease significantly,providing favorable conditions for subsequent conservative treatment.
作者
高耀东
段卓岳
郭鹏年
宋春辉
GAO Yaodong;DUAN Zhuoyue;GUO Pengnian;SONG Chunhui(Mechanical Engineering School,Inner Mongolia University of Science and Technology,Baotou 014010,China;The Second Department of Orthopaedics,the First Affiliated Hospital of Baotou Medical College,Baotou O14010,China)
出处
《内蒙古科技大学学报》
CAS
2024年第1期26-30,共5页
Journal of Inner Mongolia University of Science and Technology
基金
内蒙古自治区自然科学基金(NJZY23079)。
关键词
旋转截骨术
有限元分析
CT灰度值赋值
图像处理
rotary osteotomy
finite element analysis
CT gray value assignment
image processing
