人体小腿肌腱生物材料力学特征实验研究

发布时间：2018-05-07 11:53

本文选题：小腿肌腱 + 拉伸试验　；参考：《成都体育学院学报》2016年04期

【摘要】：目的:人体小腿肌腱损伤后的防治、修复、人工材料替换等需要大量的生物材料力学特征方面的实验数据作为其参考依据。方法:使用德国产Zwick万能材料实验机,对小腿9种72条成人新鲜小腿肌腱进行"一维拉伸破坏试验",并对实验数据进行统计学处理。结果:(1)当应变为0-5%范围时,形变随拉伸应力改变较小,属于曲线的"坡脚区";当应变为8%-16%范围时,应力随应变增大而增大,属于曲线的"直线区";当应变达到20%左右时,拉伸应力则随应变增大而减小。(2)小腿肌腱之间极限应变没有显著性差异;跟腱极限应力明显小于趾长伸肌腱、趾长屈肌腱、拇长伸肌腱与拇长伸肌腱(P0.05)。(3)部分小腿肌腱之间拉伸刚度与弹性模量有显著性差异(P0.05)。结论:(1)小腿肌腱与前臂肌腱均是以规则致密结缔组织为主构成,故其"应力—应变曲线"也呈现基本相同的特征。(2)从小腿各肌腱极限应变指标对比结果差异不明显可以推断小腿肌腱抵抗最大负荷的能力基本相同;跟腱由于其截面积大,应力呈现分散现象,故极限应力最小。(3)跟腱的拉伸刚度较大,从生物材料上保证其能够承受踝关节完成高频率、大强度、较大运动幅度的背屈运动。(4)肌腹强大的肌腱主要通过肌肉收缩力使其产生弹性变形,而肌腹较小的肌腱主要通过自身弹性变形满足承担功能的需要。
[Abstract]:Objective: the prevention and treatment of human calf tendon injury, repair, artificial material replacement and so on need a large number of biomechanical characteristics of the experimental data as its reference. Methods: using the Zwick universal material machine made in Germany, the one-dimensional tensile damage test was carried out on 72 fresh calf tendons of 9 kinds of calf, and the experimental data were analyzed statistically. Results: when the strain is 0-5%, the strain changes slightly with the tensile stress and belongs to the "slope foot" of the curve; when the strain is in the range of 8- 16%, the stress increases with the increase of the strain, which belongs to the "straight line" of the curve; and when the strain reaches about 20%, The tensile stress decreased with the increase of strain. (2) there was no significant difference in the ultimate strain between the calf tendons, and the limit stress of the Achilles tendon was significantly lower than that of the extensor digitorum longus tendon, the flexor digitorum longus tendon, and the flexor digitorum longus tendon. There were significant differences in tensile stiffness and elastic modulus between extensor pollicis longus tendon and extensor pollicis longus tendon (P0.05). Conclusion both leg tendon and forearm tendon are mainly composed of regular dense connective tissue. Therefore, the stress-strain curve also presents the same characteristics. 2) from the difference of the ultimate strain index of the calf tendon, we can infer that the ability of the calf tendon to resist the maximum load is basically the same, and the Achilles tendon has a large section area. The tensile stiffness of the Achilles tendon is larger, which ensures that the tendon can withstand the high frequency and high strength of the ankle joint from the biomaterials. The strong tendons in the abdomen mainly produce elastic deformation through the contraction force, while the tendons with smaller abdominals meet the need of assuming function mainly through their own elastic deformation.
【作者单位】：成都体育学院运动医学系;四川旅游学院;西昌学院;
【基金】：四川省教育厅基金项目“人体下肢肌腱生物材料力学特征实验研究”(14ZA0252) 国家体育总局·成都体育学院运动医学与健康研究所资助项目
【分类号】：R318.08;R686.1

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