During pre-swing, the ankle plantar flexes to...

During pre-swing, the ankle plantar flexes to...

• A. Absorb shock
• B. Dorsiflex the foot
• C. Stabilize the knee
• D. Push the leg to achieve pre-swing

Answer: (D)

In pre-swing the main action is propulsion from the ankle. As you transfer weight onto the opposite limb, the plantarflexors (calf muscles) contract to plantarflex the ankle. This causes the heel to rise and the forefoot to press into the ground, generating a forward push that moves the leg into the swing phase. That push-off is what drives the limb forward, which is why the best description is pushing the leg to achieve pre-swing. Absorbing shock happens earlier in gait when the foot first contacts the ground. Dorsiflexion is the opposite movement of plantarflexion and occurs in other parts of the gait cycle. Stabilizing the knee is a broader task and not the primary action of plantarflexion during pre-swing.

In pre-swing the main action is propulsion from the ankle. As you transfer weight onto the opposite limb, the plantarflexors (calf muscles) contract to plantarflex the ankle. This causes the heel to rise and the forefoot to press into the ground, generating a forward push that moves the leg into the swing phase. That push-off is what drives the limb forward, which is why the best description is pushing the leg to achieve pre-swing.

Absorbing shock happens earlier in gait when the foot first contacts the ground. Dorsiflexion is the opposite movement of plantarflexion and occurs in other parts of the gait cycle. Stabilizing the knee is a broader task and not the primary action of plantarflexion during pre-swing.