摘要
目的：测试新型人工椎体对脊柱力学性能的影响。方法：在１２例新鲜脊柱材料上进行压缩和前屈试验，颈段以“Ω”型人工椎间关节为对照组；胸、腰段以“Ｌ”型人工椎体为对照组，以未经手术的脊柱为正常组。结果：新型人工椎体对脊柱的压缩和前屈性能影响不大，安装“Ω”型人工椎间关节后颈段脊柱的刚度减弱；安装“Ｌ”型人工椎体后胸、腰段脊柱的刚度增加。结论：新型人工椎体具有较好的力学性能。
Objective:Survey the influences of a new designed artificial vertebral body on the mechanical behavior of the spine.Methods:The compression and anterior flexion tests were taken on 12 fresh human spine specimens,in which one middle vertebral body and two neighbor intervertebral discs was replaced with a Ω-shaped elastic artificial vertebral body in the cervical region or a L-shaped one in the thorathic and humbar region,and taken the normal spinal specimens as normal control.Results:The new designed artificial vertebral body has fewer influence on the compression and anterior flexion behavior of spine,however the rigiditg behavior decreased in cervical spine after set up'Ω'type vertebral body;and increased in thorathic and lumbar spines when set up 'L'type artificial vertebral body.Conclusions:The new type artificial vertebral body has satisfactory mechanic behavior.
出处
《中国临床解剖学杂志》
CSCD
北大核心
1997年第2期149-152,共4页
Chinese Journal of Clinical Anatomy
关键词
活动式人工椎体
脊柱
力学性能
artificial vertebral body
mechanic behavior
spine
