Fig. 1A–B.

The acetabular liners were tested under high stress conditions created by positioning the rim of the liner at 33° to the axis of the femoral neck (56° from the horizontal plane of the test station). During each cycle of wear testing, the maximum load of the applied gait cycle coincided to the point in the cycle that the components were in this position. The clearance between the femoral neck and the liner rim for this position was (A) 1.1 mm for the 36-mm femoral heads and (B) 3.4 mm for the 44-mm heads.