Table 2.

Comparison of static inclination angles provided by F4A, by GA and by the tringular plate

Static Angles	F4A	GA	Cluster
Tilt	21.23 (2.28)	11.69 (2.49)	22.24 (2.17)
Obliquity	-1.22 (3.40)	0.31 (1.28)	-1.87 (2.62)

The static inclination angles in the sagittal (tilt) and frontal (obliquity) planes as estimated by the F4A, as calculated by GA, and by the triangular plate of markers: mean and standard deviation over 5 representative subjects. Rotation angle cannot be calculated by the F4A in static because it is worked out by the inclinometer in only two anatomical planes. Unit is degree.