Cobb angle

Angle between two drawn lines, as used for scoliosis.

Browser: available nowmacOS app: 1.4.0 or newer

Drag the first line, for example along the upper endplate of the top vertebra. Then drag the second line along the lower endplate of the bottom vertebra. The angle between the two lines appears in degrees once the second line is drawn. The lines do not need to meet.

Use the Angle tool instead when you want the angle at a single vertex.