Cartilage thickness loss and clinical worsening are associated in osteoarthritic knees reaching virtual replacement status – A nested case control study from the Osteoarthritis Initiative. (April 2016) - Eckstein, F.; Boudreau, R.M.; Fujii, T.; Hannon, M.J.; Wirth, W.; Maschek, S.; Guermazi, A.; Roemer, F.; Nevitt, M.; Sharma, L.; Hunter, D.; Kwoh, K.C.