Additional file 2.

Hematoxylin-eosin stain of the operated (ACLX) and un-operated (LEFT) knee of the same rat, 12 weeks post-surgery (10× magnification). Note the disorganization of the trabecular bone seen in the ACLX (arrow) versus the LEFT knee that occurred immediately adjacent the subchondral bone cyst (SBC).

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McErlain et al. Arthritis Research & Therapy 2012 14:R26   doi:10.1186/ar3727