Table 2.

Summary of the measurements of mechanical properties.

Sample Tested	HV100	Re [MPa]	KIC [MPa•m1/2]
Tibial Component, New
Sample 1 Sample 2	365 360 359 360 362 358 Mean 360 Standard Deviation 2.50	122 120 119 120 120 119 Mean 120 Standard Deviation 1.09	108 104 106 105 108 105 Mean 106 Standard Deviation 1.67
Tibial Component Used for 6 Years
Sample 1 Sample 2 Sample 3	376 378 380 384 380 378 377 388 382 Mean 380 Standard Deviation 3.81	125 126 127 128 127 126 126 129 127 Mean 127 Standard Deviation 1.20	97 101 102 100 101 102 99 97 101 Mean 100 Standard Deviation 1.94
Tibial Component Used for 12 Years
Sample 1	432 428 431 Mean 430 Standard Deviation 2.52	144 142 14 Mean 143 Standard Deviation 1	77 77 77 Mean 77 Standard Deviation 0
Unused Tibial Component
Sample 1 Sample 2	397 400 394 407 406 396 Mean 400 Standard Deviation 5.40	132 133 131 136 136 131 Mean 133 Standard Deviation 2.25	130 129 122 125 127 123 Mean 126 Standard Deviation 3.22
Femoral Component Used for 6 Years
Sample 1 Sample 2 Sample 3	411 406 405 411 416 415 407 411 411 Mean 410 Standard Deviation 3.77	137 135 135 137 139 138 135 137 137 Mean 137 Standard Deviation 1.41	120 128 131 124 122 121 123 118 121 Mean 123 Standard Deviation 4.07
Femoral Component Used for 12 Years
Sample 1	437 444 438 Mean 440 Standard Deviation 3.78	145 148 146 Mean 147 Standard Deviation 1.15	100 96 98 Mean 98 Standard Deviation 2