Gross pathologic lesions in a rat model of OA knee in sham, OA, OP, and OA + OP groups with and without ESWT (A). The scores of the pathologic lesions were measured and calculated, and the results showed significantly higher lesion scores in OA and OA + OP groups as compared with sham (indicated as
P < 0.01). ESWT significantly decreased the total score of pathologic lesions as compared with without ESWT (indicated as #P < 0.05). The OA + OP group has significantly higher lesion score than the OA group with and without ESWT, respectively (B) (indicated as ※P < 0.05 and ※※P < 0.001); n = 8.