In vivo estimation of the shoulder joint center of rotation using magneto-inertial sensors: MRI-based accuracy and repeatability assessment

Table 2 Spot check results

	Orientation difference (degrees)			Bias in angular velocity (°/s)			Residual acceleration (m/s²)
	Roll	Pitch	Yaw	x	y	z	x	y	z
M_h	0.2 ± 0.1	0.2 ± 0.1	2 ± 0.4	0.23 ± 0.06	0.23 ± 0.11	−0.85 ± 0.11	−0.001 ± 0.02	−0.011 ± 0.01	0.001 ± 0.02
M_s	0.2 ± 0.1	0.2 ± 0.1	2 ± 0.4	−0.17 ± 0.06	0.57 ± 0.51	0.11 ± 0.11	0.002 ± 0.02	0.004 ± 0.04	0.003 ± 0.02

M_h and M_s refer to the MIMUs attached over the humerus and on the scapulae, respectively

ISSN: 1475-925X