Analysis of Proximal Femoral Parameters in Adolescent Idiopathic Scoliosis

Table 3

Mean and standard deviation (SD) of the examined parameters and the results of t-test and ANOVA.

Parameter		Control	AIS	t-test (p)	Low	Moderate	Severe	Very severe	One-way Anova (p)
	n=	350	320	350/320	129	101	49	41	320
Age (year)	mean	14.81	14.71		14.51	15.12	15.09	14.68
	SD	2.43	2.31		2.66	2.41	2.24	1.82
Femoral head diam. (mm)	mean	41.89	41.66	0.251	41.96	41.10	41.54	41.19	0.413
	SD	3.76	3.62		3.65	3.79	4.02	3.56
Femoral offset (mm)	mean	38.62	37.99	0.098	38.16	37.50	38.46	38.22	0.607
	SD	5.29	4.67		4.51	4.79	5.62	3.55
Neck length (mm)	mean	48.51	48.11	0.735	49.01	47.99	48.74	47.70	0.494
	SD	4.67	4.76		4.68	4.95	5.36	4.23
Neck shaft angle (degree)	mean	129.64	127.06	>0.001	127.49	127.09	126.61	126.09	0.022
	SD	4.50	3.85		3.65	4.37	3.52	3.25
FM-FS (degree)	mean	4.28	4.50	0.004	4.33	4.54	4.62	4.84	0.023
	SD	1.11	0.95		0.92	0.93	0.98	0.99
Femoral torsion (degree)	mean	20.71	20.36	0.598	20.39	20.89	20.35	19.56	0.955
	SD	9.70	9.88		9.65	9.36	11.09	7.81