Scoliosis and Spinal Disorders

Table 6 Frequency of symmetry and asymmetry in boys by age (year).

From: Trunk asymmetry in juveniles

	Thoracic
		Symmetry		1		-1		2		-2		Total
		N	%	N	%	N	%	N	%	N	%	N	%
Age	3	3	0.25									3	0.18
	4	4	0.33									4	0.25
	5	22	1.82	1	0.38	2	1.41					25	1.53
	6	231	19.11	55	20.83	21	14.79	1	9.09	2	66.67	310	19.03
	7	311	25.72	56	21.21	37	26.06	5	45.45			409	25.11
	8	297	24.57	68	25.76	29	20.42	1	9.09	1	33.33	396	24.31
	9	341	28.21	84	31.82	53	37.32	4	36.36			482	29.59
Total		1209	100.00	264	100.00	142	100.00	11	100.00	3	100.00	1629	100.00
	Thoracolumbar
		Symmetry		1		-1		2		-2		Total
		N	%	N	%	N	%	N	%	N	%	N	%
Age	3	2	0.17	1	0.36							3	0.18
	4	3	0.26			1	0.60					4	0.25
	5	21	1.82	3	1.09	1	0.60					25	1.53
	6	230	19.91	50	18.18	28	16.67	1	4.55	1	11.11	310	19.03
	7	295	25.54	57	20.73	43	25.60	9	40.91	5	55.56	409	25.11
	8	273	23.64	75	27.27	42	25.00	5	22.73	1	11.11	396	24.31
	9	331	28.66	89	32.36	53	31.55	7	31.82	2	22.22	482	29.59
Total		1155	100.00	275	100.00	168	100.00	22	100.00	9	100.00	1629	100.00
	Lumbar
		Symmetry		1		-1		2		-2		Total
		N	%	N	%	N	%	N	%	N	%	N	%
Age	3	2	0.18	1	0.33							3	0.18
	4	4	0.36									4	0.25
	5	17	1.52	5	1.66	2	1.18	1	3.57			25	1.53
	6	223	19.95	62	20.53	21	12.43	2	7.14	2	16.67	310	19.03
	7	270	24.15	81	26.82	43	25.44	9	32.14	6	50.00	409	25.11
	8	274	24.51	72	23.84	43	25.44	6	21.43	1	8.33	396	24.31
	9	328	29.34	81	26.82	60	35.50	10	35.71	3	25.00	482	29.59
Total		1118	100.00	302	100.00	169	100.00	28	100.00	12	100.00	1629	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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