Similar to previous reports (Andrikoula et al. 2006; Iriuchishima et al. 2012; Sonin et al. 1995; Waligora et al. 2009; Warwick & Williams 1973; Yablon et al. 2014; Zeiss et al. 1992) the present study found variations in the structure of the quadriceps tendon. However, the variability was restricted to the fusion point rather than the number or structure of the individual layers (Fig. 3).