Figure 3From: Quantitative ultrasonic assessment for detecting microscopic cartilage damage in osteoarthritisTime courses of the water content (P < 0.01) (a), chondroitin sulfate content (P < 0.01) (b) and hydroxyproline content (P = 0.23) (d) in collagenase-digested articular cartilage. Values are means ± SD. The relationships between the maximum magnitude and the chondroitin sulfate content (c) and the maximum magnitude and the hydroxyproline content (e) are also shown.Back to article page