Normal: Abducts both hips to lift the foot off the floor for 10 s while keeping trunk vertical
(2) Mild: Abducts both hips to lift the foot off the floor for 10 s but without keeping trunk vertical
(1) Moderate: Abducts only one hip off the floor for 10 s with vertical trunk
(0) Severe: Cannot abduct either hip to lift a foot off the floor for 10 s with trunk vertical or without
vertical