(3pts extra credit) The GRAFO is designed to leverage the gr…
(3pts extra credit) The GRAFO is designed to leverage the ground reaction moment at the ankle to stabilize the knee during stance. A solid pretibial shell replaces the pretibial strap of a traditional AFO and serves as a surface area for the transfer of the ground reaction force (GRF). The GRAFO transfers the GRF though a solid ankle to the anterior tibia, creating a mechanical plantarflexion moment at the ankle. The result is a knee extension moment through mid and terminal phases of stance. A patient with crouch gait is evaluated for new bilateral GRAFOs. A limited physical assessment was performed, and the presence of bilateral hip flexion contractures was missed by the clinician. What would the resulting deviation be if both of the patient’s ankles were locked at 90 degrees in the GRAFOs?