Elmerson, S., Andersson, G. B. J., Pope, M. H., & Zetterberg, C. (1987). Stability of fixation in femoral neck fractures: Comparison of four fixation devices in vivo and in cadavers. Acta Orthopaedica, 58(2), 109–112. https://doi.org/10.3109/17453678709146451