Orthograde posture

Orthograde is a term derived from (Greek ὀρθός, orthos ("right", "true", "straight") + Latin gradi (to walk)] that describes a manner of walking which is upright, with the independent motion of limbs.

Both New and Old World monkeys are primarily arboreal, and they have a tendency to walk with their limbs swinging in parallel to one another. This differs from the manner of walking demonstrated by the apes.