Blomfeldt, R., Törnkvist, H., Ponzer, S., Söderqvist, A., & Tidermark, J. (2006). Displaced femoral neck fracture: comparison of primary total hip replacement with secondary replacement after failed internal fixation: A 2-year follow-up of 84 patients. Acta Orthopaedica, 77(4), 638–643. https://doi.org/10.1080/17453670610012728