Cementless femoral fixation in the rheumatoid patient undergoing total hip arthroplasty: minimum 5-years results. - Keisu,K.S.; Orozco,F.; McCallum,J.Dr.; Bissett,G.; Hozack,W.J.; Sharkey,P.F.; Rothman,R.H. (J Arthroplasty, 2001)