Comparison of the equilibrium response of articular cartilage in unconfined compression, confined compression and indentation
Comparison of the equilibrium response of articular cartilage in unconfined compression, confined compression and indentation
复制标题
DOI：
10.1016/s0021-9290(02)00052-0
复制
发表时间：
2002-07-01
影响因子：
2.4
通讯作者：
Jurvelin, JS
中科院分区：
文献类型：
--
作者：
Korhonen, RK;Laasanen, MS;Jurvelin, JS
在机械平衡时，关节软骨通常被表征为各向同性弹性材料，没有间质流体流动。在这项研究中，平衡性能（杨氏模量。通过无侧限压缩、侧限压缩和压痕试验，研究了26个牛肱骨、髌骨和股骨软骨标本（n = 26）的总模量和泊松比。还进行了软骨泊松比的光学测量。杨氏模量的平均值（由无侧限压缩测试评估）为0.80 +/-0.33，0.57 +/-0.17和0.31 +/-0.18MPa，泊松比的平均值（由光学测试评估）为0.15 +/-0.06。0.16肱骨、髌骨和股骨软骨分别为+/- 0.05和0.21 +/-0.05。分别压痕试验表明，30-79%（p
At mechanical equilibrium, articular cartilage is usually characterized as an isotropic elastic material with no interstitial fluid flow. In this study, the equilibrium properties (Young's modulus. aggregate modulus and Poisson's ratio) of bovine humeral, patellar and femoral cartilage specimens (n = 26) were investigated using unconfined compression, confined compression, and indentation tests. Optical measurements of the Poisson's ratio of cartilage were also carried out, Mean values of the Young's modulus (assessed from the unconfined compression test) were 0.80 +/- 0.33, 0.57 +/- 0.17 and 0,31 +/- 0.18 MPa and of the Poisson's ratio (assessed from the optical test) 0.15 +/- 0.06. 0.16 +/- 0.05 and 0.21 +/- 0,05 for humeral, patellar, and femoral cartilages. respectively. The indentation tests showed 30-79% (p