Gray Cook responds to the following question: “During the workshop, you mentioned that the foot during the squat test (in the Functional Movement Screen) will very often externally rotate as someone descends into the squat if they have imperfection in the pattern (which is one of the common compensations seen). You mentioned during the lecture that the feet externally rotating and the knees collapsing inward into valgus were the same issue.”

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Deep Squat Functional Movement Screen Mobility Stability Gluteus Medius

It seems as if every lower extremity overuse ailment is associated to some degree with valgus collapse. ACL tears? Check. Patellofemoral Pain? Check. Illiotibial band pain? Check. Tibial Stress Fractures? Check. As a result a number of research studies have begun to examine what exactly valgus collapse is and what factors are associated with valgus. One of the primary researchers in this area is John Willson, PT, PhD in the Department of Physical Therapy at the University of Wisconsin at LaCrosse. Research conducted by Dr. Willson has led us to a better understanding of this pathological movement.

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Gray Cook replies to the following question: “Referring to a previous podcast which mentioned the Wall Sit as an excellent way to create mobility in the hip and also referenced some ways to make the ankle more mobile, but did not go into specific detail about how to do so.”

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Functional Movement Screen Mobility Stability Trigger Point