END-PLATE DISPLACEMENT DURING COMPRESSION OF LUMBAR VERTEBRA DISK VERTEBRA SEGMENTS AND THE MECHANISM OF FAILURE

被引：43

作者：

HOLMES, AD ^{[1
]}

HUKINS, DWL ^{[1
]}

FREEMONT, AJ ^{[1
]}

机构：

[1] UNIV MANCHESTER,DEPT MED BIOPHYS,STOPFORD BLDG,MANCHESTER M13 9PT,LANCS,ENGLAND

来源：

SPINE | 1993年 / 18卷 / 01期

关键词：

BONE COMPOSITION; COMPRESSION; END-PLATE; FRACTURE; VERTEBRAL;

D O I：

10.1097/00007632-199301000-00019

中图分类号：

R74 [神经病学与精神病学];

学科分类号：

摘要：

Seventeen specimens of lumbar discs, attached to the caudal and cranial halves of the adjacent vertebral bodies, were subjected to a maximum compressive load of 5.5 kN in six stages. The time between each stage was about 15 seconds. At each stage of compression, a radiograph of the specimen was recorded, and the bulging of the end-plate into the caudal vertebra was measured using a displacement transducer. After compression, the ash content of a bone sample and the water content of a sample of the nucleus of the disc were measured for each specimen. Sections through the specimens were examined by light microscopic study. Eight specimens did not fail, although end-plate displacement occurred during compression. The remaining nine specimens experienced fracture or permanent deformation of the end-plate. Specimens that failed had significantly lower rigidity of the end-plate and underlying trabecular bone; this rigidity was correlated with bone ash content.

引用

页码：128 / 135

页数：8

共 42 条

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