Table 3.

Correlation between cranial vertebra of sagittal hypokyphotic zone (HKZ), most rotated thoracic vertebra and apical thoracic vertebra in Lenke type 1 and 3 curves

	Spearman correlation	Significance
Cranial level–rot max thoracic	r = 0.422	p = 0.003
Cranial level–apical thoracic	r = 0.133	p = 0.357
Caudal level–rot max lumbar	r = 0.290	p = 0.145
Caudal level–apical lumbar	r = 0.136	p = 0.393

Correlation between caudal vertebra of the HKZ, most rotated lumbar vertebra and apical lumbar vertebra in Lenke type 3 curves