Effect of Age-Related Cartilage Turnover on Serum C-Telopeptide of Collagen Type II and Osteocalcin Levels in Growing Rabbits with and without Surgically Induced Osteoarthritis
Figure 2
Representative sections of articular osteochondroid tissues stained with Safranin O and magnified at 50x. (a) Grade 3: simple fissure in cartilage with surface abrasion and matrix loss within superficial zone. (b) Grade 3.5: branched fissure extending to the deep zone of cartilage. (c) Grade 4.5: erosion of the cartilage with fibrillated surfaces and mid zone excavation. (d) Grade 5.5: denudation of cartilage with reparative fibrocartilage tissue in bone surface.
