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˚