Defining Abnormal Foot Pronation - Treadmill Analysis

The definition of abnormal foot pronation does not refer to the amount of pronation.  Abnormal foot pronation refers to the timing of pronation.  That is, the foot is pronating when it should be supinating.  Above is a 4 frame video of the left foot during stance phase.  Note that at mid-stance (Frame 2- red arrow) the left foot pronates and continues to abnormally pronates (Frame 3 - red arrow) until heel off (Frame 4 - black arrow).  This is occurring when the ipsilateral (same side) hip is externally rotating. 

Abnormal Pronation Left Foot is occurring in Frames 2 - 3

Prof/Dr Brian A Rothbart
Chronic Pain Elimination Specialist
Discovered the Rothbarts Foot Structure and the PreClinical Clubfoot Deformity
Developer of Rothbart Proprioceptive Therapy
Inventor and Designer of Rothbart Proprioceptive Insoles
Founder of International Academy of Rothbart Proprioceptive Therapy
Author of Forever Free From Chronic Pain