Fig. (1) (a) Normal condylar cartilage consists of well defined regular layers: fibrous (F), reserve (R), proliferative (P), hypertrophic (H), calcified cartilage & bone (C) (H & E X100) (Bar = 100 micrometer). (b) Magnified normal condylar cartilage (Mason trichrome X 200) (Bar = 200 micrometer).