摘要
目的 测定两性不同年龄段肋软骨力学性能，为临床上预测整形后的效果，选取最佳的手术时机提供理论依据。方法 取5-25岁之间行耳廓再造术后的剩余肋软骨，将其按年龄、性别共分为六组，对不同组肋软骨的拉伸强度、应力-应变、蠕变和应力松弛力学性能进行测试，并对结果进行统计学分析处理。结果 儿童组肋软骨的各项生物力学性能均明显优于青年组和成人组，而三组中青年组力学性能为最差。结论 利用肋软骨进行耳廓再造整形手术时，应优先考虑在儿童期进行手术。
Objective To determine the age-related biomechanical properties of human costal cartilage and to offer theory reference for clinic to forecast the effect after shape and select the best operation time. Method Human costal cartilages were harvested from 25 female and 45 male donors of 5 - 25 years old after auricular reconstructive surgery. The specimens were divided into six groups： children （5 - 10 years）, adolescent （11 - 17 years） and adult （18 - 25 years）, respectively in males and females. Tensile strength, stress-strain relationship, stress relaxation and creep were tested by using a material testing machine. Result The biomechanical properties of costal cartilage are donor age and gender related. The children group has the highest tensile strengths （ P 〈 0.01 ） in both male and female groups. The male group relaxed and creeped more than that of the female group in all three age groups （ P 〈 0.01 ）. Conclusion The childhood should be first considered in orthopedic operation using rib cartilage to shape ear reconstruction.
出处
《中国生物医学工程学报》
CAS
CSCD
北大核心
2007年第2期270-275,共6页
Chinese Journal of Biomedical Engineering
关键词
肋软骨
应力应变
应力松弛
蠕变
costal cartilage
stress-strain
stress relaxation
creep
