Research Article

Total Flavonoids of Rhizoma Drynariae Restore the MMP/TIMP Balance in Models of Osteoarthritis by Inhibiting the Activation of the NF- and PI3K/AKT Pathways

Figure 2

Pathological changes in the different groups (hematoxylin-eosin staining). (a) Blank control group; (b) OA model group (established with the Hulth method); (c) TFRD-treated group (treated with total flavonoids of Rhizoma Drynariae (TFRD) after model induction with the Hulth method).