VERTEBRAL ENDPLATE FAILURE IN PORCINE AND BOVINE MODELS OF SPINAL FRACTURE INSTRUMENTATION

被引：30

作者：

ALLAN, DG

RUSSELL, GG

MOREAU, MJ

RASO, VJ

BUDNEY, D

机构：

[1] UNIV ALBERTA,DIV ORTHOPAED SURG,EDMONTON T6G 2E1,ALBERTA,CANADA

[2] UNIV ALBERTA,DEPT MECH ENGN,EDMONTON T6G 2E1,ALBERTA,CANADA

[3] GLENROSE REHAB HOSP,EDMONTON,ALBERTA,CANADA

来源：

JOURNAL OF ORTHOPAEDIC RESEARCH | 1990年 / 8卷 / 01期

关键词：

Bovine; End‐plates; Fixation devices; Porcine; Spine;

D O I：

10.1002/jor.1100080121

中图分类号：

R826.8 [整形外科学]; R782.2 [口腔颌面部整形外科学]; R726.2 [小儿整形外科学]; R62 [整形外科学（修复外科学）];

学科分类号：

摘要：

The use of mature porcine and immature bovine spines as models for the assessment of spinal fracture instrumentation is commonplace. By comparing the load‐displacement characteristics of these spine segments and observing the fracture type, this study investigated the tendency of immature bovine spines to fail prematurely at the vertebral physis, disrupting biomechanical evaluation of spinal fracture fixation devices. Load to failure of the spines was determined using the Instron Universal Testing Machine and a specially designed endcap. In axial compression, the 10–16‐week‐old calf spines failed at 12,845 ± 1,466 N, compared with mature pig spines at 17,300 ± 5,170 N (p < 0.05). Axial compression with flexion caused consistent failure through an end‐plate in both species: 995 ± 156 N for the calf spines and 2,025 ± 575 N for the porcine spines (p < 0.005). It was concluded that the tendency for immature bovine spines to fail more readily at the cartilaginous end‐plate makes the calf spine a less desirable model. Copyright © 1990 Orthopaedic Research Society

引用

页码：154 / 156

页数：3