SDF-1α Promotes Subchondral Bone Sclerosis and Aggravates Osteoarthritis by Regulating the Proliferation and Osteogenic Differentiation of Bone Marrow Mesenchymal Stem Cells

C57BL/6J mice were divided into the following three groups: the sham control, destabilization of the medial meniscus, and AMD3100-treated DMM groups. The mice were sacrificed after two or eight weeks, and samples were collected for histological and immunohistochemical analyses.