For the case of a diametrical clearance of 100 m, more results are shown in Figs. 5-8. The variations of the
minimum and central film thickness in a walking cycle are presented in Fig. 5. Fig. 5 a) and b) shows the
results for the hip simulator with the cup inclination angle of 45 degrees and zero respectively; Fig. 5 c)
shows the results for the physiological load pattern. It is found that the cup inclination angle does not affect
much the predicted film thickness as long as the main loading area is far away from the rim of the
acetabular cup. For example, for the diametrical clearance of 100 m the minimum and maximum values of
the minimum film thicknesses in the hip simulator cycle for the two solutions vary by only 3.7% and 1.6%
for the Newtonian solutions, 4.5% and 0.8% for the non-Newtonian solutions. The film thickness contours
at two time steps (0.2 s and 0.64 s) occurring during the stance phase and swing phase respectively for the
hip simulator pattern are plotted in Fig. 6 (At 0.64 s the reversal rotation resulted in zero velocity). The film
thickness contours at 0.55 s and 1.1 s, occurring during the loading and swing phases respectively in the
physiological walking pattern are plotted in Fig. 7. The Newtonian and non-Newtonian film thickness
profiles on a cross-section at two different time steps (same as Fig. 6) in a walking cycle are compared in Fig.
8. The non-Newtonian viscosity contours at specific time steps are shown in Fig. 9, along with the minimum
viscosity through the two different gait cycles in Fig. 10.