腰椎牵引力与椎间盘髓核应力之间变化关系的非线形模型  

The non-linear model simulates relationship between the lumbar traction force and nucleus stress

作　　者：万磊[1] 李义凯[2] 尹东[1] 

机构地区：[1]南方医科大学珠江医院骨科 [2]南方医科大学中医系针灸骨伤教研室,广州510515

出　　处：《颈腰痛杂志》2005年第6期407-409,共3页The Journal of Cervicodynia and Lumbodynia

基　　金：国家自然科学基金(30171184)

摘　　要：目的 利用有限元模型计算结果,对腰椎牵引力与椎间盘髓核应力之间变化关系进行数 学模型拟合,以指导临床正确使用牵引重量。方法 通过L4-L5腰椎运动节段CT扫描图象建立有限 元模型,对模型轴向加载不同负荷值的牵拉力,计算结果输入SPSS1．0．0进行统计。结果 三次曲线 Y=0．6300-0．0094X-1．E-05x2-9．E-08x3可以较好与数据吻合,曲线在200N载荷时出现拐点。结论 以体重的30％-80％牵引是相对安全的牵引范围。Objective In order to know how to use Ihe traction force correctly on clinie,we built a mathematical model to simulate relalionship between the lumbar traction force and nucleus stress using a available finite element analysis. Methods Three dimensional finite model were created based on CT data of L4-L5 motion segment. We gave different axis loads of traction force on this model then inputted the outcome to SPSS10.0 Results Cubic curve Y-0.6300-0.0094X-1.E- 05x^2-9.E-08x^3 tallied whh data preferably and a inflection appear- while load is 200N,. Conclusion According to analysis,when the traction force is from 30% to 80% of weight ,the lunbar traction is relatively safe.

关 键 词：腰椎 牵引 有限元 

分 类 号：Q66[生物学—生物物理学]