460-2 - Pronation(all these aspects are coupled together...

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NORMAL GAIT AND DYNAMIC FUNCTION . PURPOSE OF THE FOOT IN AMBULATION A. Pronation (flexible adaptation) 1. Adaptation to terrain 2. Dissipate ground reaction forces (shock absorption) 3. Lower extremity internal rotation B. Supination (stable platform) . Rigid lever for propulsion . Provide stable base of support for LE weight transfer . Lower extremity external rotation . THE GAIT CYCLE . Stance Phase – 60% of gait cycle; heel strike – foot flat – heel rise – toe off . Swing Phase – 40% of gait cycle; early (acceleration) – mid – terminal (deceleration) swing . LOWER EXTREMITY KINEMATICS All movements described below are from the perspective of standing on the Right foot .
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Unformatted text preview: Pronation (all these aspects are coupled together) . Pelvis: (R) CCW; Fwd Translation; Anterior Rotation . Hip: Flexion; Adduction; Internal Rotation . Knee: Flexion; Valgus; Tibial Internal Rotation . Ankle: Dorsiflexion . Subtalar: Calcaneal Eversion; Talar Adduction and Plantarflexion . Midtarsal: Unlocking . First Ray: Unlocking . Supination . Pelvis: (R) CW; Bwd Translation; Posterior Rotation . Hip: Extension; Abduction; External Rotation . Knee Extension; Varus; Tibial External Rotation . Ankle: Plantarflexion . Subtalar: Calcaneal Inversion; Talar Abduction and Dorsiflexion . Midtarsal: Locking . First Ray: Locking...
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