Table 5.

Statistical analysis of measurements and angulations of femurs according to impact-2.

Variable	Impact-2	n	Mean	SD	Median	Minimum	Maximum	p
FNA angle	yes	32	12.1	5.9	10	2	28	0.25
	no	167	10.6	5.8	10	−2	32
CD angle	yes	32	128.3	5.6	128	111	140	0.20
	no	167	126.8	6.1	128	110	145
AP sphericity	yes	32	45.0	2.3	45	40	50	0.058
	no	167	43.8	3.4	44	33.5	54
SI sphericity	yes	32	44.5	2.9	45	38	50	0.040
	no	167	43.3	3.6	44	33	54
5 mm diameter head-neck junction	yes	32	37.0	2.8	37	30	42	0.0001
	no	167	32.4	3.8	32.2	23	40
Diameter base-neck	yes	32	26.3	2.7	26	19.5	34	0.054
	no	167	25.4	2.3	25	20	32
Head-neck AP angle	yes	32	93.2	8.9	93	80	121	0.18
	no	167	95.3	7.2	94	78	116
Head-neck profile angle	yes	32	91.6	8.0	93	75	108	0.45
	no	167	93.3	6.6	92	76	118
Cam-head (%)	yes	32	82.3	4.8	82.6	69.8	92.2	0.0001
	no	167	74.0	6.5	73.9	57.5	89.5
Base-cam (%)	yes	32	71.1	6.3	68.4	60.2	87	0.0001
	no	167	79.1	7.2	79.4	58.8	96.2
AP/SI	yes	32	1.013	0.037	1	0.978	1.158	0.48
	no	167	1.012	0.030	1	0.950	1.158
Base/Head (%)	yes	32	58.4	4.3	57.3	45.3	68	0.91
	no	167	58.2	4.4	58	44.7	72.7
SD: Standard deviation

Source: Faculdade de Medicina de Petrópolis