Table 2.

Comparison between 2 and 3D methods for acetabular offset, femoral offset, and global offset.

	Native hip			Implanted hip
	2D	3D	p	2D	3D	p
Acetabular offset (mm)	32.4 ± 3.3 (27 ~ 46)	32.3 ± 3.1 (26 ~ 44)	0.614	27.6 ± 4.1 (20 ~ 40)	27.6 ± 3.9 (19 ~ 41)	0.655
Femoral offset (mm)	32.7 ± 4.5 (21 ~ 41)	38.1 ± 4.0 (27 ~ 47)	< 0.01	33.8 ± 7.8 (16 ~ 54)	41.8 ± 6.2 (29 ~ 58)	< 0.01
Global offset (mm)	65.1 ± 5.7 (53 ~ 78)	70.4 ± 4.9 (58 ~ 84)	< 0.01	61.4 ± 8.5 (44 ~ 85)	69.4 ± 7.2 (56 ~ 91)	< 0.01