Table 2. Spinal flexibility and in-orthosis correction.

Group	Pre-orthosis Standing (X-ray*)	Spinal Flexibility (US*)				In-orthosis Correction (X-ray*)
		Supine	Prone	Sitting bending	Prone bending
Mild thoracic curves (n = 10)	22° ± 2°	41% ± 22% a,b	43% ± 18% a,b	159% ± 46%	135% ± 20%	38% ± 21%
Moderate thoracic curves (n = 24)	32° ± 5°	36% ± 19% a	37% ± 20% a	126% ± 39%	116% ± 35%	33% ± 19%
Mild thoracolumbar/lumbar curves (n = 13)	20° ± 4°	46% ± 23% a	45% ± 14% a,b	174% ± 66%	149% ± 34%	48% ± 24%
Moderate thoracolumbar/lumbar curves (n = 20)	31° ± 5°	42% ± 16% a	46% ± 17% a,b	137% ± 64%	121% ± 35%	48% ± 24%
Overall curves(n = 67)	28° ± 7°	40% ± 19% a	42% ± 18% a,b	143% ± 56%	127% ± 34%	41% ± 23%

* X-ray: X-ray assessment, US: ultrasound assessment.

^a no significant difference with the corresponding in-orthosis correction (p>0.05).

^b good correlation with the corresponding in-orthosis correction (r>0.75).