Measurement of Flexion Angle of the Finger Joint during Cylinder Gripping Using a Three-Dimensional Bone Model Built by X-Ray Computed Tomography

Table 1

Three-way ANOVA with repeated measurement (). The dependent variable was the flexion angle.

Source of variation	Degree of freedom	Type III SS	Mean squares
Diameters ^a	1.149	207,673.697	180,797.809	1025.177	<0.001
Fingers ^b	3	4014.324	1338.108	27.279	<0.001
Joints ^c	2	26,868.242	13,434.121	28.683	<0.001
	6	2151.941	358.657	12.524	<0.001
	2.301	19,652.346	8542.455	23.408	<0.001
	6	2653.076	442.179	6.792	<0.001
	12	2488.546	207.379	3.036	0.001

^aDiameters—10 mm, 60 mm, and 120 mm. ^bFingers—index, middle, ring, and small. ^cJoints—DIP, PIP, and MP. SS: sums of squares.