Associations of medial meniscal tear and extrusion with the sites of cartilage loss in the knee - Results from the Most study - Lynch, J; Javaid, M; Roemer, F; Guermazi, A; Tolstykh, I; Englund, M; McCulloch, C; Sharma, L; Lewis, C; Torner, J; Felson, D; Nevitt, M (2008)