The Nonoperated Knee Predicts Function 3 Years after Unilateral Total Knee Arthroplasty Farquhar S et al. - Weakening of the quadriceps muscles in all participants represents changes due to ageing; however on average the nonoperated limb weakened over time, possibly representing not only changes resulting from aging, but progression of osteoarthrosis in some patients with unilateral TKA. [more...]