Partio, E., Orava, T., K Lehto, M. U., & Lindholm, S. T. (1994). Survival of the Townley knee: 360 cases with 8 (0.1-15) years’ follow-up. Acta Orthopaedica, 65(3), 319–322. https://doi.org/10.3109/17453679408995461