"Bulk lubricant temperature (°C) for each implant taken close to the articulating surface of the joint when tested in clean lubricant, with porcine bone particles and with PMMA cement particles (Table 3)" clean lubricant porcine bone particles PMMA cement particles PEEK 1 29.1 31.0 30.8 PEEK 2 29.1 30.2 30.0 PEEK 3 29.3 30.6 30.8 CoCr 1 25.6 25.8 30.0 CoCr 2 26.3 26.3 31.1 CoCr 3 26.8 27.1 31.1 soak control 25.8 26.1 26.1