This short video shows the damaging motion of over supination (aka under pronation or lateral instability). Focus on Tiffany's left foot in particular following approximately every other heel strike where the heel rolls to the outside. Then focus later on her left knee motion demonstrating the varus thrust which can accompany over supination causing medial knee compartment compression forces and possible injury. This is the first of 5 videos entitled "Supinators". The entire series will show the correction of this problem with orthotic devices with the particular modifications needed and the introduction of the Denton Modification. See the link below to the possible injuries associated with over supination.
http://www.drblakeshealingsole.com/2010/11/top-100-biomechanical-guidelines-13.html
http://www.drblakeshealingsole.com/2010/11/top-100-biomechanical-guidelines-13.html
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Thank you very much for leaving a comment. Due to my time restraints, some comments may not be answered.I will answer questions that I feel will help the community as a whole.. I can only answer medical questions in a general form. No specific answers can be given. Please consult a podiatrist, therapist, orthopedist, or sports medicine physician in your area for specific questions.