Bjørgul, Kristian, and Olav Reikerås. “Hemiarthroplasty in Worst Cases Is Better Than Internal Fixation in Best Cases of Displaced Femoral Neck Fractures: A Prospective Study of 683 Patients Treated With Hemiarthroplasty or Internal Fixation”. Acta Orthopaedica, vol. 77, no. 3, Jan. 2006, pp. 368-74, doi:10.1080/17453670610046271.