Table 3:

Euler angles [X,Y,Z] for the repeatability (pooled standard deviation of deviation angles) and consistency (average absolute deviation angle) measures, and helical axis deviation angles for each coordinate system. Bold text denotes the best system(s) for each parameter and Euler component.

	System 1	System 2	System 3	System 4
Talus
Repeatability [X,Y,Z] axes (°)	[4.5, 4.0, 2.9]	[0, 0, 0]	[0, 0, 0]	[16.1, 7.7, 9.6]
Consistency [X,Y,Z] Abs. Avg. (°)	[4.2, 2.9, 4.4]	[1.8, 3.2, 1.6]	[3.2, 3.0, 3.9]	[4.5, 6.1, 5.3]
Helical Axis Deviation Angle (°)	37.3 ± 9.7	43.7 ± 10.6	38.7 ± 8.2	38.2 ± 9.2
Calcaneus
Repeatability [X,Y,Z] axes (°)	[4.2, 7.4, 5.2]	[0, 0, 0]	[0, 0, 0]	[1.0, 4.9, 1.3]
Consistency [X,Y,Z] Abs. Avg. (°)	[2.8, 6.3, 3.4]	[0.9, 6.5, 1.1]	[2.4, 4.7, 3.5]	[2.5, 4.8, 3.7]
Helical Axis Deviation Angle (°)	35.8 ± 7.1	33.4 ± 5.5	32.8 ± 8.0	34.0 ± 6.7