Scoliosis and Spinal Disorders

Table 8 Frequency of symmetry and asymmetry in girls by age (year).

From: Trunk asymmetry in juveniles

	Thoracic
		Symmetry		1		-1		2		-2		Total
		N	%	N	%	N	%	N	%	N	%	N	%
Age	3	3	0.24			1	0.72					4	0.24
	4	4	0.40	1	0.45							6	0.37
	5	22	2.61	2	0.90							35	2.14
	6	231	21.39	41	18.55	23	16.55	1	12.50	2	22.22	337	20.56
	7	311	22.35	48	21.72	33	23.74	3	37.50	2	22.22	368	22.45
	8	297	29.48	59	26.70	35	25.18	3	37.50	3	33.33	472	28.80
	9	341	23.53	70	31.67	47	33.81	1	12.50	2	22.22	417	25.44
Total		1209	100.00	221	100.00	139	100.00	8	100.00	9	100.00	1639	100.00
	Thoracolumbar
		Symmetry		1		-1		2		-2		Total
		N	%	N	%	N	%	N	%	N	%	N	%
Age	3	2	0.25			1	0.60					4	0.24
	4	3	0.42	1	0.39							6	0.37
	5	21	2.62	4	1.57							35	2.14
	6	230	21.01	54	21.26	27	16.07	4	21.05	3	23.08	337	20.56
	7	295	22.45	54	21.26	40	23.81	4	21.05	4	30.77	368	22.45
	8	273	28.95	67	26.38	54	32.14	6	31.58	2	15.38	472	28.80
	9	331	24.30	74	29.13	46	27.38	5	26.32	4	30.77	417	25.44
Total		1155	100.00	254	100.00	168	100.00	19	100.00	13	100.00	1639	100.00
	Lumbar
		Symmetry		1		-1		2		-2		Total
		N	%	N	%	N	%	N	%	N	%	N	%
Age	3	2	0.26			1	0.52					4	0.24
	4	4	0.35	2	0.78							6	0.37
	5	17	2.85	2	0.78							35	2.14
	6	223	20.50	59	23.14	35	18.32	3	12.00	3	25.00	337	20.56
	7	270	22.32	57	22.35	37	19.37	10	40.00	6	50.00	368	22.45
	8	274	29.76	61	23.92	62	32.46	4	16.00	1	8.33	472	28.80
	9	328	23.96	74	29.02	56	29.32	8	32.00	2	16.67	417	25.44
Total		1118	100.00	255	100.00	191	100.00	25	100.00	12	100.00	1639	100.00

Scoliometer readings are at standing forward bending position. 1: mild right asymmetry (ATR 1–6o), 2: severe right asymmetry (ATR ≥ 7o), -1 mild left asymmetry (ATR 1–6o), -2: severe left asymmetry (ATR ≥ 7o).

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