Choong, P.F.M. et al. 1996. Megaprostheses after resection of distal femoral tumors: A rotating hinge design in 30 patients followed for 2-7 years. Acta Orthopaedica. 67, 4 (Jan. 1996), 345–351. DOI:https://doi.org/10.3109/17453679609002328.