MCAM and osteochondritis dissecans: In the bone tissue of both DL and OCD patients, we observed CD146-positive cells in the bone marrow area around endothelial cells and adipocytes, while we did not find any positive staining in the trabeculae (Figure 2(a) and supplemental Figure 1, in Supplementary Material available online at https://doi.org/10.1155/2017/9036305).