Focal Defects of the Knee Articular Surface: Evidence of a Regenerative Potential Pattern in Osteochondritis Dissecans and Degenerative Lesions

Figure 4

CD34 on focal osteochondral samples from DL and OCD. (a) Representative CD34 immunostained section of focal osteochondral lesion from DL and OCD. Bars 100 μm. (b) Number of CD34 positive cells/area in bone compartment of DL (number of fragments/sections = 21/21) and OCD (number of fragments/sections = 22/22). Data are expressed as median with 10th–90th percentile (whiskers). . (c) Number of CD34 positive cells/area in bone associated with histological score level (low, medium, and high). Data are expressed as median with interquartile range. . (d) Number of CD34 positive cells/area in bone of DL patients associated with histological score level (low, medium, and high). Data are expressed as median with interquartile range. n.s. = not significant. (e) Number of CD34 positive cells/area in bone of OCD associated with histological score level (low, medium, and high). Data are expressed as median with interquartile range. .

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