Table 4.

Static tests summary: Displacements, valgus-malrotation of the tibial head and their corresponding crack and ultimate loads, including mean values and standard deviations (SD)

Specimen	Crack / Ultimate load [kN]	Medial displ. at crack/ ultimate load [mm]	Lateral displ. at crack/ ultimate load [mm]	valgus-malrotation at crack/ ultimate load (°)	Lateral stiffness at crack/ ultimate load [kN/mm]	Failure types
Activmotion 1	- / 8.9	- / 1.3	- / 2.5	- / 0.6	- / 3.6	2
Activmotion 2	3.7 / 7.5	0.7 / 2.1	2.6 / 5.1	0.9 / 1.4	1.4 / 1.5	1 and 2
Mean:	- / 8.2	- / 1.7	- / 3.8	- / 1.0	- / 2.6
SD ±:	- / 1.0	- / 0.4	- / 1.3	- / 0.4	- / 1.1