====== Sagittal vertical alignment ======
Sagittal vertical alignment ([[SVA]]):

Horizontal distance from the posterior edge of the [[S1]] [[endplate]] to a plumb line dropped from the mid-[[C7]] [[VB]]

{{::sagittal_vertical_alignment.jpg?200|}}

Normal < 5 cm.

Alignment objective < 5 cm.

Numbers are positive if plumb line is anterior. May be susceptible to error depending on patient´s stance, resting arms on equipment...

see [[C2-C7 sagittal vertical axis]]