title: [Electron microscopy of human articular cartilage].
abstract: 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.
mesh_terms: D000328:Adult; D002358:Cartilage, Articular / Q000166:cytology / Q000648:ultrastructure*; D002462:Cell Membrane / Q000648:ultrastructure; D003094:Collagen; D005347:Fibroblasts / Q000648:ultrastructure; D006801:Humans; D008854:Microscopy, Electron; D008855:Microscopy, Electron, Scanning; D008875:Middle Aged
chemical_list: D003094:Collagen
vernacular_title: Elektronnaia mikroskopiia sustavnogo khrashcha cheloveka.