Abnormal foot pronation refers to the timing of pronation. That is, the foot is pronating when it should be supinating.
Abnormal Pronation - Observed in Rothbarts Foot
Referred to as Gravity Drive Pronation
Abnormal Foot Pronation. In Rothbarts Foot, from Foot Flat to Heel Lift, the foot's motion is being driven by the pull of gravity, not by the Clockwise, Counter-clockwise rotation of the pelvis.
Gait Analysis - Stance Phase Right Foot
From Heel Strike to Flat Foot, the pelvis is rotating Counter-clockwise
From Flat Foot to Heel Lift, the pelvis is rotating Clockwise.
Zitzlesperger S 1960.The mechanics of the foot based on the concept of the skeleton as a statically indetermined space framework. Clinical Orthopedics, 16:47-63
Rothbart BA 1973. Part I. Biomechanical analysis of a normal gait pattern. Journal Canadian Podiatry Association, (3):3-7.
Rothbart BA 1973. Part II. Biomechanical analysis of a normal gait pattern. Journal Canadian Podiatry Association, (4):1-12.