An in vitro total hip-arthroplasty model was evaluated to determine if
centrifugation of bone cement results in greater static strength and
low-cycle fatigue strength than hand-mixing. The static-failure test of the
stem, cement, and simulated bone composite demonstrated that the
centrifuged cement had significantly greater static strength than the
hand-mixed cement. However, under low-cycle fatigue tests on the same
composite models, the centrifuged and hand-mixed specimens were not
significantly different.