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

Table 2

Mean flexion angle of each joint from the index to the little finger when cylinders of the different diameters were gripped. Numbers in the lower brackets indicate standard deviation.

Diameter	Index (deg)			Middle (deg)
	DIP	PIP	MP	DIP	PIP	MP
10 mm	48.2; (22.7)	105.5; (9.2)	65.6; (7.9)	64.8; (16.4)	104.8; (9.8)	75.9; (5.5)
60 mm	35.2; (6.8)	48.0; (7.7)	39.7; (11.8)	34.5; (7.5)	48.1; (8.1)	46.3; (15.4)
120 mm	18.9; (6.1)	24.2; (6.5)	32.2; (5.5)	20.0; (12.0)	25.9; (6.7)	22.9; (10.3)
Diameter	Ring (deg)			Small (deg)
	DIP	PIP	MP	DIP	PIP	MP
10 mm	57.2; (16.8)	110.5; (6.1)	76.6; (14.9)	65.8; (8.9)	93.0; (13.3)	64.1; (12.1)
60 mm	27.1; (7.1)	48.7; (6.8)	38.7; (12.5)	30.0; (9.6)	32.8; (11.3)	35.2; (15.9)
120 mm	16.1; (6.4)	24.7; (9.1)	15.1; (8.5)	11.9; (5.3)	15.2; (5.2)	12.6; (5.7)