A three-dimensional finite element analysis of sacroiliac joint exerted simulating oblique-pulling manipulation
10.3969/j.issn.1006-5725.2014.14.014
- VernacularTitle:斜扳法作用下骶髂关节的三维有限元分析
- Author:
Xianwen YANG
;
Zujiang CHEN
;
Shaoqun ZHANG
;
Meichao ZHANG
;
Yikai LI
- Publication Type:Journal Article
- Keywords:
Sacroiliac joint;
Oblique-pulling manipulation;
Finite element analysis;
Biomechanics
- From:
The Journal of Practical Medicine
2014;(14):2228-2230
- CountryChina
- Language:Chinese
-
Abstract:
Objective To observe the influence of the stress and displacement when the normal sacroiliac joint is exerted load simulating oblique-pulling manipulation, and to analyze the stress and displacement distribution when a three-dimensional finite element model of normal pelvis is exerted by oblique-pulling manipulation. Methods Lateral position was simulated on the three-dimensional finite element model of normal pelvis and it exerted loads horizontally forth and back, then the stress and displacement distribution were calculated. Results When the normal sacroiliac joint was exerted load simulating oblique-pulling manipulation, stress of the pelvis was mainly concentrated on the anterior inferior part of the left iliac fossa from the front view, with a maximum stress of 0.540E+07. The maximum value of internal and external strain of normal sacroiliac joint was 8.682 × 10-4m;the maximum value of anteropostreior strain was 3.337 × 10-4m;and the maximum value of up and down strain of normal sacroiliac joint was 3.284 × 10-4m. Conclusions The focus of the sacroiliac joint stress is mainly on the anterior and posterior superior borders when the normal pelvis exerted oblique-pulling manipulation. The internal and external strain of normal sacroiliac joint is maximal, the anteropostreior strain ranges the second, and the up and down strain is minimal.
