Bjørgul, K., & Reikerås, O. (2006). 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, 77(3), 368–374. https://doi.org/10.1080/17453670610046271