Application of two-parameter scoliometer values for predicting scoliotic Cobb angle

Table 1 The mathematical formulas to calculate Cobb angles

Study	Parameter	Formula	Correlation value (r)
Korovessis et al. [10]	TI	TC = 1.62 TI + 6.30	0.414
Korovessis et al. [10]	LI	LC = 1.58 LI + 7.36	0.649
Sapkas et al. [11]	TI	TC = 20.461 + 0.13 TI²	0.685
Sapkas et al. [11]	LI, H	LC = 70.46 − 0.639 H + 5.707 LI	0.215
Coelho et al. [23]	ATR	C = − 6.3 + 2.7 ATR	0.7
The current study	TI, LI	TC = 2.6 TI − 1.4 LI	0.931
The current study	TI, LI	LC = − 1.5 TI + 2.0 LI	0.874

TC = predicted thoracic Cobb angle, LC = predicted lumbar Cobb angle, TI = apical thoracic scoliometer value, LI = apical lumbar scoliometer value, H = body height, C = Cobb angle, ATR = axial trunk rotation

ISSN: 1475-925X