Abstract
Human joints are capable of functioning effectively with low friction and without failure throughout human life under circumstances where both articular cartilage as bearing material and synovial fluids as lubricants fulfill their normal functions. It is well accepted that articular cartilage adapts to changing mechanical environments. As the rubbring condition is getting severe, the articular cartilage will be worn, resulting in osteoarthritis, but little is known about the mechanism to osteoarthritis. It is important to clear the stress-strain state of cartilage and in chondrocytes under repeated cartilage deformation to know how osteoarthritis gets to start and progress. The purpose of this study is to investigate an influence of chondrocytes on stress-strain state of articular cartilage and an influence of position of chondrocytes on its depth-dependent deformation. FEM analyses predict that the time-dependent and depth-dependent deformation of articular cartilage is caused by fluid exudation, but material properties of chondrocytes do not affect the bulk deformation of articular cartilage so much. The deformation of chondrocytes is depth-dependent and the largest time-dependent deformation behavior occurs in the surface layer. These results may clear how the transduction of mechanical stimuli concern about metabolism of articular cartilage via chondrocytes.
| Original language | English |
|---|---|
| Pages (from-to) | 165-178 |
| Number of pages | 14 |
| Journal | Memoirs of the Faculty of Engineering, Kyushu University |
| Volume | 62 |
| Issue number | 4 |
| Publication status | Published - Dec 2002 |
| Externally published | Yes |
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All Science Journal Classification (ASJC) codes
- Earth and Planetary Sciences(all)
- Management of Technology and Innovation
- Atmospheric Science
- Energy(all)
- Process Chemistry and Technology
Cite this
Finite element analyses for time-dependent and depth-dependent deformation of articular cartilage and chondrocytes under constant compression. / Ihara, Maki; Murakami, Teruo; Sawae, Yoshinori.
In: Memoirs of the Faculty of Engineering, Kyushu University, Vol. 62, No. 4, 12.2002, p. 165-178.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Finite element analyses for time-dependent and depth-dependent deformation of articular cartilage and chondrocytes under constant compression
AU - Ihara, Maki
AU - Murakami, Teruo
AU - Sawae, Yoshinori
PY - 2002/12
Y1 - 2002/12
N2 - Human joints are capable of functioning effectively with low friction and without failure throughout human life under circumstances where both articular cartilage as bearing material and synovial fluids as lubricants fulfill their normal functions. It is well accepted that articular cartilage adapts to changing mechanical environments. As the rubbring condition is getting severe, the articular cartilage will be worn, resulting in osteoarthritis, but little is known about the mechanism to osteoarthritis. It is important to clear the stress-strain state of cartilage and in chondrocytes under repeated cartilage deformation to know how osteoarthritis gets to start and progress. The purpose of this study is to investigate an influence of chondrocytes on stress-strain state of articular cartilage and an influence of position of chondrocytes on its depth-dependent deformation. FEM analyses predict that the time-dependent and depth-dependent deformation of articular cartilage is caused by fluid exudation, but material properties of chondrocytes do not affect the bulk deformation of articular cartilage so much. The deformation of chondrocytes is depth-dependent and the largest time-dependent deformation behavior occurs in the surface layer. These results may clear how the transduction of mechanical stimuli concern about metabolism of articular cartilage via chondrocytes.
AB - Human joints are capable of functioning effectively with low friction and without failure throughout human life under circumstances where both articular cartilage as bearing material and synovial fluids as lubricants fulfill their normal functions. It is well accepted that articular cartilage adapts to changing mechanical environments. As the rubbring condition is getting severe, the articular cartilage will be worn, resulting in osteoarthritis, but little is known about the mechanism to osteoarthritis. It is important to clear the stress-strain state of cartilage and in chondrocytes under repeated cartilage deformation to know how osteoarthritis gets to start and progress. The purpose of this study is to investigate an influence of chondrocytes on stress-strain state of articular cartilage and an influence of position of chondrocytes on its depth-dependent deformation. FEM analyses predict that the time-dependent and depth-dependent deformation of articular cartilage is caused by fluid exudation, but material properties of chondrocytes do not affect the bulk deformation of articular cartilage so much. The deformation of chondrocytes is depth-dependent and the largest time-dependent deformation behavior occurs in the surface layer. These results may clear how the transduction of mechanical stimuli concern about metabolism of articular cartilage via chondrocytes.
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M3 - Article
VL - 62
SP - 165
EP - 178
JO - Memoirs of the Faculty of Engineering, Kyushu University
JF - Memoirs of the Faculty of Engineering, Kyushu University
SN - 1345-868X
IS - 4
ER -