正交各向异性骨板中孔周围骨不均匀性的演变：理论预测

Evolution of bone inhomogeneity around a hole in an orthotropic plate of bone: theoretical predictions.

作者信息

Firoozbakhsh K, Aleyaasin M, Moneim M S

机构信息

Department of Orthopaedic and Rehabilitation, Medical Center, University of New Mexico, Albuquerque 87131.

出版信息

J Biomech. 1992 Apr;25(4):387-94. doi: 10.1016/0021-9290(92)90258-3.

DOI:10.1016/0021-9290(92)90258-3

PMID:1583018

Abstract

The problem of the evolution of bone inhomogeneity around a hole in a plate of bone with orthotropic symmetry is considered. The internal remodeling theory of Cowin and Hegedus is employed to show the existence of final inhomogeneity following stress concentration. The speed of remodeling around the hole and its variation with respect to distance is investigated. Results indicate that the effect of stress concentration around a hole is slightly less pronounced if bone is considered orthotropic rather than transversely isotropic. The speed of remodeling is found to be unaffected but the amplitude of inhomogeneity with respect to distance drops and disappears slightly faster if bone is considered orthotropic.

摘要

研究了具有正交各向异性对称性的骨板中孔周围骨不均匀性的演变问题。采用考温和赫格杜斯的内部重塑理论来证明应力集中后最终不均匀性的存在。研究了孔周围的重塑速度及其随距离的变化。结果表明，如果将骨视为正交各向异性而非横向各向同性，孔周围应力集中的影响会稍弱一些。研究发现，重塑速度不受影响，但如果将骨视为正交各向异性，不均匀性相对于距离的幅度会下降且消失得稍快一些。