原文见:Costa ML,Achten J,Parsons NR,et al.Total hip arthroplasty versus resurfacing arthroplasty in the treatment of patients with arthritis of the hip joint:single centre,parallel group,assessor blinded,randomised controlled trial[J].BMJ,2012,344:e2147.published at:http://www.bmj.com/content/344/bmj.e2147.