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. Author manuscript; available in PMC: 2009 Sep 29.
Published in final edited form as: J Biomech. 2006 Dec 11;40(9):1968–1974. doi: 10.1016/j.jbiomech.2006.09.029

Figure 2. Scaled Posterior-Anterior Displacement of the FHA.

Figure 2

Average for all subjects (thick black line), with ±1 standard deviation shown with a yellow shaded are. The posterior-anterior displacement of the FHA was defined as the posterior-anterior displacement of the sagittal plane point. This point was defined for all time as the point on the FHA that crossed the sagittal plane at the x=0 location, relative to the femoral coordinate system (the deepest point in the sulcus groove is the origin of the femoral system (Seisler and Sheehan FT, 2006)). The scaling used was identical to that used for the MA. Further details on the calculations involved have been published previously (Sheehan, 2006).