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. Author manuscript; available in PMC: 2017 Aug 8.
Published in final edited form as: Osteoarthritis Cartilage. 2013 Sep 3;21(12):1886–1894. doi: 10.1016/j.joca.2013.08.023

Figure 5.

Figure 5

Mean contact area sensitivity reported as percent change with respect to femoral cartilage area. Full Ext = Full extension pose, Full Flex = Full flexion pose, Mid Flex = Mid-flexion pose, Mid Ext = Mid-extension pose. T1±1, T2±1, and T3±1: Perturbations in PF flexion-extension, medial-lateral tilt, and varus-valgus rotation. X±1, Y±1, and Z±1: Perturbations in PF medial-lateral, superior-inferior, and anterior-posterior displacement. The first data point in the graphical pair on the x-axis is the positive direction: flexion, medial tilt, varus rotation, and medial, superior, and anterior displacement. For example, X1±1 indicates the sensitivity of contact area to medial perturbation and then to lateral perturbation.