BIOMECHANICAL ANALYSIS OF PATELLAR TENDON ALLOGRAFTS AS A FUNCTION OF DONOR AGE
BIOMECHANICAL ANALYSIS OF PATELLAR TENDON ALLOGRAFTS AS A FUNCTION OF DONOR AGE
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DOI：
10.1177/036354659502300319
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发表时间：
1995-05-01
影响因子：
4.8
通讯作者：
NICHOLAS, RW
中科院分区：
文献类型：
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作者：
FLAHIFF, CM;BROOKS, AT;NICHOLAS, RW
我们评估了18 ~ 55岁的同种异体髌腱移植物的生物力学性能，骨-髌腱-骨复合体取自可接受的供体并进行处理。去除脂肪和软组织，将肌腱纵向切开，留下中央三分之一。进行面积测量，并进行机械测试。以10%初始长度/s的速率拉伸试样至断裂，测定各试样的断裂力、拉伸应力、弹性模量和伸长率，各力学性能与年龄均无显著相关性（P > 0.05）。失效载荷范围为2110 - 4650 N，平均值为3424 N。回归分析表明，随着年龄的增加，拉伸应力略有下降，但相关性不显著。年龄在55岁以下的同种异体髌腱移植物似乎具有相似的力学性能。
We evaluated the biomechanical properties of patellar tendon allografts from donors aged 18 to 55 years, Bone-patellar tendon-bone complexes were harvested from acceptable donors and processed. Fat and soft tissue were removed, and the tendons were sectioned lengthwise leaving the central third. Area measurements were taken, and mechanical testing was performed. Specimens were pulled to failure at a rate of 10% of the initial length per second, The force at failure, tensile stress, modulus of elasticity, and percent elongation were determined for each specimen, There was no significant correlation (P > 0.05) between age and any of the mechanical properties. Load at failure ranged from 2110 to 4650 N, with a mean of 3424 N. Regression analysis showed slightly decreasing tensile stress with increasing age, but the correlation was not significant. It appears that patellar tendon allografts from donors up to age 55 have similar mechanical properties.