Figure 1.

Macroscopic appearance of osteoarthritic articular cartilage from femoral condyles and tibial plateaus. Representative pictures of placebo-treated and ASU-treated dogs at 8 weeks after surgery, showing erosion and pitting (circled). A, anterior; L, lateral; M, medial; P, posterior.

Boileau et al. Arthritis Research & Therapy 2009 11:R41   doi:10.1186/ar2649
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