Rapid Prototyping for In Vitro Knee Rig Investigations of Prosthetized Knee Biomechanics: Comparison with Cobalt-Chromium Alloy Implant Material

Table 4

Calculated slope by Deming-regression for the tests with SPM and RPM in the knee rig. Additionally the results of the -test against the slope of 1, which represents an identical behavior between both materials.

Parameter	Slope with standard deviation	value
Quadriceps force	1.014 ± 0.086	0.69
Retropatellar peak pressure	0.977 ± 0.091	0.53
Contact area	1.051 ± 0.012	0.30
ap-translation	1.086 ± 0.207	0.31
Femorotibial rotation	0.956 ± 0.138	0.43
Shift of the patella	1.081 ± 0.169	0.25
Tilt of the patella	0.960 ± 0.176	0.57
Rotation of the patella	1.057 ± 0.243	0.57