Scoliosis and Spinal Disorders

Table 7 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	0.22									3	0.18
	4	4	0.30									4	0.25
	5	24	1.78	1	0.70							25	1.53
	6	256	18.99	24	16.78	28	21.88	2	33.33			310	19.03
	7	336	24.93	42	29.37	30	23.44	1	16.67			409	25.11
	8	329	24.41	34	23.78	30	23.44			3	75.00	396	24.31
	9	396	29.38	42	29.37	40	31.25	3	50.00	1	25.00	482	29.59
Total		1348	100.00	143	100.00	128	100.00	6	100.00	4	100.00	1629	100.00
	Thoracolumbar
		Symmetry		1		-1		2		-2		Total
		N	%	N	%	N	%	N	%	N	%	N	%
Age	3	2	0.15	1	0.69							3	0.18
	4	4	0.30									4	0.25
	5	24	1.80	1	0.69							25	1.53
	6	257	19.25	21	14.58	30	23.26	1	7.69	1	12.50	310	19.03
	7	328	24.57	41	28.47	34	26.36	3	23.08	3	37.50	409	25.11
	8	321	24.04	36	25.00	33	25.58	3	23.08	3	37.50	396	24.31
	9	399	29.89	44	30.56	32	24.81	6	46.15	1	12.50	482	29.59
Total		1335	100.00	144	100.00	129	100.00	13	100.00	8	100.00	1629	100.00
	Lumbar
		Symmetry		1		-1		2		-2		Total
		N	%	N	%	N	%	N	%	N	%	N	%
Age	3	2	0.16	1	0.55							3	0.18
	4	4	0.31									4	0.25
	5	22	1.72	1	0.55	1	0.73	1	5.26			25	1.53
	6	247	19.27	36	19.78	21	15.33	3	15.79	3	33.33	310	19.03
	7	316	24.65	49	26.92	35	25.55	7	36.84	2	22.22	409	25.11
	8	310	24.18	44	24.18	34	24.82	5	26.32	3	33.33	396	24.31
	9	381	29.72	51	28.02	46	33.58	3	15.79	1	11.11	482	29.59
Total		1282	100.00	182	100.00	137	100.00	19	100.00	9	100.00	1629	100.00

Scoliometer readings are at sitting 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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