HARP

Where the stance is ending, the psoas gives a strong but brief swing oomph to the THIGH. The FOOT is still fully planted. If the foot is too

planted, then the heel cannot rise as the thigh is urged to flex. Make no mistake here. The Iliopsoas muscle, which is NOT in the leg but rather in the abdomen, is powering the swing as does a mother pushing a child in a swing. She is not in the swing. Does the thigh then flex and thus bend the knee? Well the foot mechanics decides that. The wobble zone is where ground based forces (ground reaction) is revealed to us. HERE is where more than ½ of all interventions are addressed, of all kinds, shoe types to surgery. Transitions- from stepper to walker - live in this zone as well.