Yabe , Y., Hatori , M., Kumagai , J., Koizumi , N., Sakuma , T. and Kawamura , M. (2009) “Heterotopic Ossification of the Distal Portion of Biceps Femoris”, Upsala Journal of Medical Sciences, 111(3), pp. 321-327. doi: 10.3109/2000-1967-058.