Journal of Orthopaedic Surgery and Research

Table 3 Prosthetic movement in the model expressed in six DOF (translation is expressed with respect to the centroid of the prosthetic landmark group) (n = 105)

From: A CT method for following patients with both prosthetic replacement and implanted tantalum beads: preliminary analysis with a pelvic model and in seven patients

		Rotation (degrees)			Translation (mm)
		x	y	z	x	y	z
120 kVp, trial 1	Mean	0.02	0.00	0.02	0.00	−0.06	−0.02
	Median	0.01	−0.03	0.03	0.00	0.05	−0.02
	Minimum	−0.45	−0.49	−0.49	−0.11	−0.27	−0.11
	Maximum	0.53	0.59	0.61	0.12	0.17	0.10
	SD	0.17	0.22	0.26	0.05	0.07	0.05
	95 % CI, upper	0.05	0.04	0.07	0.01	−0.04	−0.01
	95 % CI, lower	−0.02	−0.04	−0.03	−0.01	−0.07	−0.03
120 kVp, trial 2	Mean	0.01	0.00	0.02	−0.01	−0.06	−0.02
	Median	0.02	−0.04	0.03	0.00	−0.08	−0.02
	Minimum	−0.46	−0.47	−0.48	−0.11	−0.27	−0.11
	Maximum	0.51	0.56	0.57	0.11	0.17	0.10
	SD	0.17	0.21	0.26	0.05	0.07	0.04
	95 % CI, upper	0.5	0.04	0.7	0.00	−0.04	−0.01
	95 % CI, lower	−0.02	−0.04	−0.03	−0.02	−0.07	−0.03
100 kVp, trial 1	Mean	0.07	0.06	0.08	0.02	−0.05	−0.02
	Median	0.06	0.02	0.09	0.03	−0.04	−0.03
	Minimum	−0.56	−0.59	−0.60	−0.11	−0.20	−0.20
	Maximum	0.61	0.85	0.72	0.15	0.12	0.20
	SD	0.25	0.27	0.27	0.06	0.07	0.08
	95 % CI, upper	0.12	+0.11	0.13	0.04	−0.3	−0.01
	95 % CI, lower	0.02	0.01	0.03	0.01	−0.06	−0.03
100 kVp, trial 2	Mean	0.07	0.06	0.07	0.02	−0.05	−0.02
	Median	0.04	0.03	0.08	0.03	−0.06	−0.2
	Minimum	−0.60	−0.59	−0.62	−0.13	−0.21	−0.19
	Maximum	0.83	0.58	0.72	0.16	0.12	0.20
	SD	0.26	0.27	0.28	0.07	0.07	0.08
	95 % CI, upper	0.12	0.11	0.12	0.04	−0.04	−0.01
	95 % CI, lower	0.02	0.01	0.01	0.01	−0.07	−0.04

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