Miniaturized Water-Jet Ultrasound Indentation System for Quantitative Assessment of Articular Cartilage Degeneration: A Validation Study

Figure 7

Typical histological pictures showing the Safranin O and fast green staining for the (a) normal (b) collagenase-digested and (c) trypsin-digested cartilage. It is typically observed that in collagenase-digested cartilage, there was partial loss of proteoglycans while they were completely depleted in trypsin-digested samples. Arrows indicate the cartilage-bone interfaces.

(a)

(b)

(c)