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Ultrastructural changes in the transitional zone between articular cartilage and synovial membrane during the development of experimental osteoarthrosis

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Abstract.

We studied the ultrastructural changes that take place in the transitional zone between the articular cartilage and the synovial membrane during the development of experimental osteoarthrosis. We focused special attention on changes involving the proteoglycan complexes within the matrix of articular cartilage. We observed that changes in the transitional zone resemble those seen in articular cartilage during the development of osteoarthrosis. We also found transient cellular forms with fibroblast phenotype regulating the demands of both cartilage and synovial matrix. The transient nature of these elements determines the pronounced lability of this zone, and this may be related to the early development of osteoarthrosis.

Résumé.

Nous avons étudié les changements ultrastructuraux dans la zone transitionnelle entre le cartilage articulaire et la synoviale pendant le développement dune arthrose expérimentale. Une attention spéciale a été accordée aux altérations des complexes de protéoglycans dans la matrice du cartilage articulaire. Nous avons observé que les changements dans la zone transitionnelle ressemblent à ceux du cartilage articulaire pendant le développement de l'arthrose. Nous avons trouvé des formes cellulaires transitoires avec un phénotype de fibroblaste qui règle les demandes du cartilage et de la matrice synoviale. La nature transitoire de ces éléments détermine la labilité prononcée de cette zone qui est la cause sous-jacente des premiers signes manifestes du développement de l'arthrose.

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Vidinov, .N., Djerov, .A. Ultrastructural changes in the transitional zone between articular cartilage and synovial membrane during the development of experimental osteoarthrosis. International Orthopaedics (SICOT) 26, 137–140 (2002). https://doi.org/10.1007/s00264-002-0340-x

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  • DOI: https://doi.org/10.1007/s00264-002-0340-x

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