中国组织工程研究与临床康复2009，Vol.13Issue(30)：5972-5976,5.DOI:10.3969/j.issn.1673-8225.2009.30.039
不同矫形力矫正特发性脊柱侧凸的三维有限元分析
Three-dimensional finite element analysis of adolescent idiopathic scoliosis correction by different correction methods
盛林 1汪学松 1吴志宏 1翟吉良 1李书纲1
作者信息
- 1. 中国医学科学院,北京协和医院骨科,北京市,100730
- 折叠
摘要
Abstract
CT data regarding PUMCⅡ d2 adolescent idiopathic scoliosis obtained from one female patient were input into modeling software minics 11.11 to obtain medical simulation model.Then finite element analysis models of AIS patients (T1-S) were created by introducing simulation models into software abaqus 6.7.Finite element models of T6 11 segments were corrected by 5 different correction methods:simple concave bracing,simple convex pressurization,concave distraction and convex compression simultaneously,concave distraction prior to convex compression and concave distraction after convex pressurization.Abaqus software was used to simulate correction of scoliosis with vertebral arch pedicle screw by loading 50 N,100 N,and 200 N distraction forces on the concave side pedicles of the end vertebrae T6 and T11.The displacement of vertebrae T6 in Y-axis (sagittal plane) and Z-axis (coronal plane),which respectively represented the correction effects of kyphosis and scoliosis,was compared between prior to and after correction.Simple concave distraction provided better outcomes in terms of displacement of T6 in Z-axis than the remaining four methods (P ＜ 0.01).Concave distraction and convex compression simultaneously,concave distraction prior to convex pressurization and concave distraction after convex compression produced identical displacements of T6 in Y-axis,which were all better than simple concave distraction (P＜ 0.01).The present findings imply that for curative effects of five methods on correction of scoliosis in the coronal plane:simple concave distraction＞ concave distraction and convex compression simultaneously = concave distraction prior to convex compressio= concave distraction after convex compression ＞ simple convex pressurization;for curative effects of five methods on correction of kyphosis in the sagittal plane:simple convex compression ＞ concave distraction and convex compression simultaneously = concave distraction prior to convex compression= concave distraction after convex compression＞ simple concave bracing.Simple concave distraction could not produce obvious corrective effects on kyphosis rather than lead to worsened kyphosis to some extent.Simple convex compression could not produce obvious corrective effects on scoliosis rather than result in aggravated scoliosis to some extent.关键词
特发性脊柱侧凸/脊柱后凸/三维有限元分析分类
医药卫生引用本文复制引用
盛林,汪学松,吴志宏,翟吉良,李书纲..不同矫形力矫正特发性脊柱侧凸的三维有限元分析[J].中国组织工程研究与临床康复,2009,13(30):5972-5976,5.
