中国组织工程研究与临床康复2008，Vol.12Issue(39)：7764-7767,4.
新型形态记忆合金颈椎夹钩治疗寰枢椎不稳的生物力学测试
Biomechanical study of neotype shape memory alloy cervical hook for atlantoaxial instability
摘要
Abstract
BAcKGROUND:In recent years,the pedicle screws fixation technique,which is used in fixation for atlantoaxial instability associated with trauma,severe degeneration and tumorectomy,has been developed.However,this kind of technique easily causes several complications,including malpositional screws,vascular injuries,and even vertebral artery injury.Based on the biomechanical characteristics of memory alloy and determination of atlantoaxial data,a neotype shape memory alloy cervical hook was designed to treat atlantoaxial instability.OBJECTIVE:To investigate the biomechanieal characteristics of the neotype shape memory alloy cervical hook for atlantoaxial instability.DESIGN,TIME AND SETTING:Repeated measurement analysis of variance test was performed in the Laboratory of Clinical Anatomy and Medical Biomechanics,Southern Medical University between March and April 2008.MATERIALS:Eight fresh adult craniocervical specimens(C0-C4)were provided by Department of Clinical Anatomy,Southern Medical University.Atlantoaxial neotype shape memory alloy cervical hook(50.8%-51.8%nickel and the remaining part was titanium)was fabricated by Shanghai Xinchang Memory Alloy Co.,Ltd.METHODS:The included eight C0-C4 specimens were used to test three-dimension ranges of motion(ROM)by fixation and neotype shape memory alloy cervical hook fixation.Then,the positions of spine varying from no loading to the maximum loading status were scanned and analyzed using image processing software to determine the three-dimensional ROM under different statuses.MAIN OUTCOME MEASURES:Three-dimensional ROM of tested specimens.RESULTS:Neotype shape memory alloy cervical hook fixation and Germany AESCULAP SSE hanger fixation had similar flexion-extension range of motion(P=0.595).Lateral bending three-dimensional ROM was greater in the neotype shape memory alloy cervical hook fixation group than in the Germany AESCULAP AAE hanger fixation(P< 0.05).The rotatory three-dimensional ROM was smaller in the neotype shape memory alloy cervical hook fixation group than in the Germany AESCULAP AAE hanger fixation(P<0.05).CONCLUSION:Neotype shape memory alloy cervical hook fixation had comparative post-surgery immediate stability with the Germany AESCULAP AAE hanger fixation.Neotype shape memory alloy cervical hook fixation produced a little worse biomechanical lateral bending stability and a little better biomechanical rotatory stability than Germany AESCULAP AAE hanger fixation.关键词
寰枢椎不稳/生物力学/颈椎夹钩分类
医药卫生引用本文复制引用
舒小秋,万磊,尹东,刘成龙,靳安民..新型形态记忆合金颈椎夹钩治疗寰枢椎不稳的生物力学测试[J].中国组织工程研究与临床康复,2008,12(39):7764-7767,4.基金项目
广东省医学科学技术研究基金资助项目(20061210440105196306118017) （20061210440105196306118017）
广东省自然科学基金资助项目(06105116) （06105116）
Supported by:Medical Scicalce and Technology RcsccLech Foundation of Guangdong Province,No.20061210440105 196306118017,the Natural Science Foundation of Guangdong Province, No.06105116 （）
