Research Article
Morphological and Microstructural Alterations of the Articular Cartilage and Bones during Treadmill Exercises with Different Additional Weight-Bearing Levels
Figure 2
OARSI assessment of articular cartilage ((a) grade 0: cartilage surface is smooth; (b) grade 1: surface intact with uneven articular surface is observed; (c) grade 2: discontinuity of surface is destroyed; and (d) grade 3: cartilage degeneration is observed with obvious cracks extension).
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