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PubMed1979

[Electron microscopy of human articular cartilage].

Scanning and transmission microscopy of the articular cartilage was performed in femoral condyles of persons at the age of 30-50 years. It was demonstrated that hyaline cartilage is covered with a protective fibrillar layer consisting of tightly pressed collagenous fibrillae with an underlying layer of fibroblastic cells. In the intracellular substance of the hyaline cartilage fibrillar structures form a complex reticular web with vertical arrangement of the main collagenous fasiculi. In the superficial layer of the hyaline cartilage the collagenous fibrillae and their fasciculi form arcade-like structures. Lacunar chondrocytes have a rough villose surface, cellular secrete is discharged as round granules through cytoplasmic membrane. Ultrastructural changes in chondrocytes are observed simultaneously with their degenerative-dystrophic changes.

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