Validity and responsiveness of the Knee Society Clinical Rating System in comparison with the SF-36 and WOMAC. - Lingard EA; Katz JN; Wright RJ; Wright EA; Sledge CB; Kinemax Outcomes Group; Lingard, E A; Katz, J N; Wright, R J; Wright, E A; Sledge, C B (Journal of Bone & Joint Surgery, American Volume, 2001)