دورية أكاديمية
Experimental study on boundary lubricity of superficial area of articular cartilage and synovial fluid
| العنوان: | Experimental study on boundary lubricity of superficial area of articular cartilage and synovial fluid |
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| المؤلفون: | Wenxiao Li, Takehiro Morita, Yoshinori Sawae |
| المصدر: | Friction, Vol 12, Iss 5, Pp 981-996 (2024) |
| بيانات النشر: | SpringerOpen, 2024. |
| سنة النشر: | 2024 |
| المجموعة: | LCC:Mechanical engineering and machinery |
| مصطلحات موضوعية: | articular cartilage, synovial fluid, the uppermost superficial layer, boundary lubrication, Mechanical engineering and machinery, TJ1-1570 |
| الوصف: | Abstract The boundary lubrication mechanism at the articulating surface of natural synovial joints has been the subject of much discussion in tribology. In this study, to elucidate the lubricating function of the superficial area of articular cartilage and synovial fluid (SF), cartilage specimens were processed with four different treatments: gentle and severe washing with detergent, incubation in NaCl solution, and trypsin digestion to selectively remove certain constituents from the cartilage surface. Subsequently, the frictional characteristics were examined in phosphate-buffered saline (PBS) and SF against glass. Angularly reciprocating sliding tests with a spherical glass probe and square articular cartilage specimens were performed at low contact loads in the mN range to extract the frictional behavior in the superficial area of the cartilage specimens. Meanwhile, the cartilage surface was observed to confirm the effects of treatments on the morphology of the cartilage surface using a fluorescence microscope and water-immersion methods. The coefficient of friction (COF) of the prepared cartilage specimens was varied from 0.05 to over 0.3 in PBS. However, a certain group of cartilage specimens exhibited a low COF of less than 0.1 with limited variation. For the low COF group of specimens, all four treatments increased the COF in PBS to different extents, and fluorescence microscopy revealed that the integrity of the cartilage surface was deteriorated by treatments. This means that the intact cartilage surface had lubricating constituents to maintain low friction, and the removal of such constituents resulted in the loss of the intrinsic boundary lubricity of the cartilage surface. The variation in the COF of the cartilage specimens was suppressed in SF because it had a clear boundary lubrication effect on the cartilage surface. The lubricating effect of SF could be confirmed even after degenerative treatment. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2223-7690 2223-7704 |
| Relation: | https://doaj.org/toc/2223-7690; https://doaj.org/toc/2223-7704 |
| DOI: | 10.1007/s40544-023-0822-y |
| URL الوصول: | https://doaj.org/article/bb3e735975494ccbb3f6ff26e10c6c15 |
| رقم الأكسشن: | edsdoj.bb3e735975494ccbb3f6ff26e10c6c15 |
| قاعدة البيانات: | Directory of Open Access Journals |
Find this article in full text from Springer Verlag. 
Full Text Finder | تدمد: | 22237690 22237704 |
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| DOI: | 10.1007/s40544-023-0822-y |