Wear rate of UHMWPE tibial components articulating against PEEK-OPTIMAŽ and cobalt chrome femoral components (n=3) assessed by gravimetric analysis after 3 million cycles of wear simulaton under intermediate and 3 million cycles under high kinematic conditions (mm3/MC). Data relates to Figure 5 for Intermediate kinematics and Figure 7 for high kinematic conditions Intermediate kinematics SAMPLE cobalt chrome PEEK-OPTIMAŽ 1 1.30 1.82 2 1.41 2.22 3 2.02 3.44 High kinematics SAMPLE cobalt chrome PEEK-OPTIMAŽ 1 2.13 3.40 2 3.02 5.25 3 1.54 4.67 Wear volume of UHMWPE tibial components articulating against cobalt chrome and PEEK-OPTIMAŽ femoral components (n=3). Wear was assessed by gravimetric analysis, 3 MC of wear simulation was carried out under intermediate kinematics and 3MC of wear simulation was carried out under high kinematics (mm3) Data relates to Figure 6 cycles (millions) Cobalt chrome 1 Cobalt chrome 2 Cobalt chrome 3 PEEK-OPTIMAŽ 1 PEEK-OPTIMAŽ 2 PEEK-OPTIMAŽ 3 Intermediate kinematics 0 0 0 0 0 0 0 0.94 1.30 1.41 2.02 1.82 2.22 3.44 3 0.04 4.41 4.65 7.28 8.13 6.65 High Kinematics 4 2.91 6.21 6.18 10.31 12.16 9.55 4.6 3.93 8.88 7.35 12.32 13.99 14.44 6 6.55 13.21 9.24 17.43 23.89 20.18