摘要
目的 探讨不同牵引角度及重量对颈椎生物力学的影响。方法 将５ 具颈椎标本（ Ｃ１ ～７）制成颈椎生物力学模型，观察牵引对下颈椎椎体（ Ｃ４ ， Ｃ５） 和椎间盘（ Ｃ４ ～５ ， Ｃ５ ～６） 应变以及颈椎总体位移的影响。结果 前屈１５°牵引时，椎体的应变增加最大，中立位和前屈１５°牵引时，椎间盘的应变增加最大，前屈２５°和后伸２５°牵引时，颈椎总体位移增加最大。上述各角度牵引后应变位移的线性变化以４ ～６ ｋｇ 较好。结论 在前屈１５°、中立位４ ～６ ｋｇ 的牵引较为符合人体颈椎的生物力学原理。
Objective To experimentally study the effect of cervical traction with different forces and directions on cervical biomechanics. Method The cervical biomechanical model was made of C 1 C 7 sample from 5 fresh cadavers of accidental death. The effect of traction on the strain of the low cervical spine (C 4,C 5) and disc (C 4 5,C 5 6) and displacement of the whole cervical spine were measured. Results The cervical strain and displacement were increased with the increase of traction. The maximum increase in strain of cervical spine occurred when traction was applied with flexion 15°; Maximum increase in strain of disc (P<0.05 to P<0.01) occurred when traction was applied in neutral and flexion 15°; Maximum increase in whole cervical spine displacement (P<0.05) occurred when traction was applied with flexion 25° and extension 25°. This showed a linear variation of strain and displacement at traction of 4 6 kg. Conclusion Clinically, the good combination of angle and force of traction, in most cases, flexion 15° and middle, with 4 6 kg, might meet biomechanics of the human cervical spine better.
出处
《中华实验外科杂志》
CAS
CSCD
北大核心
1999年第5期467-469,共3页
Chinese Journal of Experimental Surgery
基金
上海市教委博士基金
关键词
牵引术
生物力学
颈椎病
Traction Cervical vertebrae Biomechanics
