Fig. 3From: Experimental observation of the sequence of tibial plateau chondrocyte and matrix degeneration in spontaneous osteoarthritis in Guinea pigsProposed model for the sequence of chondrocyte and extracellular matrix degeneration. a Normal chondrocytes and normal extracellular matrix. b Degenerated chondrocytes, hypertrophic changes, and normal extracellular matrix when the OA-initiation factors appear. c Apoptosis of chondrocytes in cartilage tissue occurs,leaving empty chondrocyte lacuna. Normal extracellular matrix in cartilage tissue. d Chondrocyte degeneration and extracellular matrix degradationBack to article page