摘要
目的:探讨骨折治疗过程及其固定器械的生物力学评价方法。方法:从生物力学观点出发,通过对骨修复过程的生物力学基本原理、固定原则的阐述和骨折固定的结构分析,提出了理想固定的力学模型,给出了骨折固定与骨科固定器械的生物力学评价方法。结果:临床上一个最佳的骨折固定,应是实现固定器的每一部分都能以最少的约束使伤骨以几何不变体系固定于固定器。而各个部分组合成一个整体后,要求这个整体的组合是“弹性”的组合,且组合为几何不变体系。这个组合应当是:①固定稳定。②无功能替代。③断端得到的是生理应力。结论:优秀的骨科固定器应是能够最大限度地满足骨折固定的需求。既能以最少的约束实现骨折段与固定器的几何不变体系的连接,又能实现各几何不变体系的弹性连接,还能给骨折断面施加恒定的生理应力。临床骨折固定中,应充分利用和发挥固定器械的优点,克服固定器械的缺点和不足,利用几何构造分析方法,以选择用最少的约束达到最理想的固定。
AIM:To investigate the treatment process of fracture and the method for evalua ting the biomechanics of fixing apparatus for fracture healing. METHODS:A mechanical model of ideal fracture fixation was put forward and the valuation methods for biomechanics of fracture fixation and fixation apparatus i n orthopaedics were suggested according to the expounding of the basic principle s of biomechanics in fracture healing process and fixation principle, and struct ural analysis of fracture fixation from the biomechanical point of view. RESULTS:In clinic, an optimal setting for fracture fixation should realize tha t each part of the fixing apparatus could fix the injured bone into the apparatu s in the least restraint to compose a geometric invariant system.And each part i ntegrated to a whole one,which ought to be an elastic integration and a geometri c invariant system.Such an integration should be of the properties: ①stable fix ation;②no functional fixation and ③physiological stress on the breaking ends. CONCLUSION:An excellent fixture used in orthopaedic surgery should be utmost t o satisfy the fixation requirement of clinical setting of fracture.It can not on ly realize the connection of fracture segment with fixture in the least restrain t to form a geometric invariant system,accomplish plastic connection of each geo metric invariant systems,but also bring constant physiological stress to fractur e segments.In fracture fixation,it is should utilize and put the advantage of fi xation apparatus in use fully,overcome its shortcomings and deficiency,and then choose the optimal fixation in the least restraint by using geometric structural analysis.
出处
《中国临床康复》
CAS
CSCD
北大核心
2005年第2期200-201,共2页
Chinese Journal of Clinical Rehabilitation
