Classification of deformities | Normal condition | Mild deformity | Moderate deformity | Severe deformity |
HVA | 0˚ - 15˚ | 15˚ - 30˚ | 30˚ - 40˚ | ≥40˚ |
IMA | 0˚ - 8.35˚ | 8.35˚ - 13.32˚ | 13.32˚ - 14.97˚ | ≥15˚ |
Absolute value of deformity(d)* | 0˚ - 17.16˚ | 17.65˚ - 32.82˚ | 32.82˚ - 42.71˚ | ≥42.71˚ |