改良Galveston技术单侧固定骶髂关节的三维有限元分析  

Unilateral fixation of sacroiliac joint using modified Galveston technique:Three-dimensional finite element analysis

作　　者：李全[1] 郑龙坡[1] 杨成伟[1] 华莹奇[1] 蔡郑东[1] 

机构地区：[1]解放军第二军医大学长海医院骨科,上海市200433

出　　处：《中国组织工程研究与临床康复》2009年第22期4273-4276,共4页Journal of Clinical Rehabilitative Tissue Engineering Research

摘　　要：建立3个有限元模型,即完整的保留骶髂关节活动的模型、采用改良Galveston技术行骶髂关节双侧固定的模型以及单侧固定的有限元模型。对腰椎顶端施加压力载荷,与文献比较验证模型的有效性,并比较模型的位移以及器械上的应力分布。单侧固定后骶髂关节的位移小于骶髂关节完整时的位移,但要明显大于双侧固定,并且后方棒上应力也要显著大于双侧固定。提示单侧固定在短期内可以提供有效的固定,但远期抗疲劳的能力可能不如双侧固定。临床上应当尽量避免行单侧固定,如已行单侧固定应当尽早取出。Three finite element models were developed： intact sacroiliac joint with L-L5 and sacrum; bilateral sacroiliac joint fixation model using modified Galveston technique; unilateral fixation sacroiliac joint fixation model using modified Galveston technique. Displacement of models and stress distribution of instruments were calculated and compared with each other. Displacement of the model with unilateral fixation of damaged sacroiliac joint was smaller than intact model, but much greatly than bilateral fixation model. And the stress on the rod of unilateral fixation was much higher than bilateral fixation, Unilateral fixation of damaged sacroiliac joint is strong enough in short-term, but not as good as bilateral fixation under repetitive fatigue loading in long-term. Unilateral fixation of damaged sacroiliac joint is not recommended. If it has been applied on patients, the instrument should be taken out as soon as possible.

关 键 词：有限元分析 骶髂关节 重建 单侧固定 

分 类 号：R322.7[医药卫生—人体解剖和组织胚胎学]