Table 1:

Comparison of model-based tracking mean bias and precision from the present study with a study by Caputo et al.

	Present Study	Caputo et al.,2009
Mean Translational Bias (mm)	0.03	0.04
Mean Translational Precision (mm)	0.12	0.11
Mean Rotational Bias (°)	0.16	0.2
Mean Rotational Precision (°)	0.78	0.1