Table 3.

The lower confidence interval (LCI) and upper confidence interval (UCI) of the slope of the path that generates a minimal carpal bone motion (MM slope). Linear regression was used to calculate the MM slope. The comparison for flexion-extension (FE) and volar-dorsal translation (VDT) revealed different patterns of wrist movement that generates minimal motions for the bones in the proximal row (slopes < 0.3), and the bones in the distal row (slopes > 0.6) of carpal bones.

Flexion-Extension MM Slope’s CI				Volar Dorsal Translation MM Slope’s CI
Bone	LCI	UCI		Bone	LCI	UCI
Hamate	0.09	0.11		Hamate	0.2	0.3
Trapezoid	−0.09	−0.08		Trapezoid	−0.3	−0.2
Trapezium	−0.1	−0.09		Trapezium	−0.3	−0.2
Triquetrum	0.6	0.7		Triquetrum	1.1	1.3
Lunate	1.1	1.2		Lunate	1.5	1.7
Scaphoid	0.7	0.8		Scaphoid	1.1	1.3