Table 1.

Results (all values in degrees)

Sr. No.	Freehand		Navigation		CT value		D (freehand)		D (navigation)
	Inclination	Version	Inclination	Version	Inclination	Version	dAf	dVf	dAn	dVn
1	32	2	40	10	46	8	14	6	6	2
2	40	-6	42	4	55	20	15	26	13	16
3	26	7	40	11	48	22	22	15	8	11
4	52	12	44	14	39	17	13	5	5	3
5	34	24	48	13	42	10	8	14	6	3
6	41	8	40	-4	49	12	8	4	9	16
7	21	9	39	16	51	15	30	6	12	1
8	34	18	41	13	47	9	13	9	6	4
9	47	0	44	13	41	7	6	7	3	6
10	37	14	48	-8	54	9	17	5	6	17
11	58	27	42	15	44	18	14	9	2	3
12	32	6	48	14	44	20	12	14	4	6
13	39	10	44	18	48	24	9	14	4	6
14	20	18	38	13	47	12	27	6	9	1
15	46	14	42	9	34	7	12	7	8	2
16	32	24	47	12	53	16	21	8	6	4
17	53	20	43	16	38	11	15	9	5	5
18	42	17	48	8	43	5	1	12	5	3
19	51	8	43	16	39	13	12	5	4	3
20	30	13	37	20	46	25	16	12	9	5
21	49	5	40	17	35	20	14	15	5	3
22	33	-3	43	9	49	15	16	18	6	6
23	41	4	45	16	56	19	15	15	11	3
24	49	8	40	19	44	12	5	4	4	7
25	28	14	43	16	40	21	12	7	3	5
26	37	-1	45	12	48	18	11	19	3	6
27	38	12	41	16	43	18	5	6	2	2
28	47	16	46	8	38	10	9	6	8	2
29	40	20	38	11	43	4	3	16	5	7
30	27	6	41	14	46	20	19	14	5	6
31	52	10	45	17	47	21	5	11	2	4
32	45	2	41	14	36	24	9	22	5	10
33	39	4	46	10	48	19	9	15	2	9
34	49	13	43	19	50	15	1	2	7	4
35	36	20	45	12	48	9	12	11	3	3
36	29	-5	39	11	44	15	15	20	5	4
37	32	3	43	10	46	18	14	15	3	8
38	38	9	49	15	46	23	8	14	3	8
39	43	15	46	9	53	5	10	10	7	4
40	53	20	44	10	40	13	13	7	4	3
41	48	14	41	19	35	16	13	2	6	3
42	44	24	47	15	43	4	1	20	4	11
43	40	6	46	13	47	21	7	15	1	8
44	32	9	43	16	48	19	16	10	5	3
45	36	18	47	8	53	12	17	6	6	4
46	39	19	42	13	48	5	9	14	6	8
47	43	6	46	15	56	14	13	8	10	1
48	35	3	40	12	46	18	11	15	6	6
49	47	9	42	18	44	21	3	12	2	3
50	51	15	45	24	39	20	12	5	6	4
51	46	21	41	17	44	13	2	8	3	4
52	41	8	44	5	51	14	10	6	7	9
53	38	2	47	18	43	14	5	12	4	4
54	32	11	43	11	41	21	9	10	2	10
55	29	16	39	20	47	10	18	6	8	10
56	43	4	48	17	46	25	3	21	2	8

dAf deviation of intraoperative freehand inclination from CT inclination reading, dVf deviation of intraoperative freehand version from CT version reading, dAn deviation of intraoperative navigation inclination from CT inclination reading, dVn deviation of intraoperative navigation version from CT version reading