Lahm, Andreas, Markus Uhl, Christoph Erggelet, Jörg Haberstroh, and Eike Mrosek. 2004. “Articular Cartilage Degeneration After Acute Subchondral Bone Damage An Experimental Study in Dogs With Histopathological Grading”. Acta Orthopaedica 75 (6):762-67. https://doi.org/10.1080/00016470410004166.