2Brouwer GM, van Tol AW, Bergink AP, et al. Association between val- gus and varus alignment and the development and progression of radio- graphic osteoarthritis of the knee [ J ]. Arthritis Rheum, 2007,56 ( 4 ) : 1204-1211.
3Hunter D J, Sharma L, Skaife T. Alignment and osteoarthritis of the knee[ J]. J Bone Joint Surg Am, 2009,91 (1) :85-89.