During the late stance phase just before toe-off, the plantar flexors primarily contribute to which outcome?

During the late stance phase just before toe-off, the plantar flexors primarily contribute to which outcome?

• A. Knee flexion
• B. Ankle dorsiflexion
• C. Hip abduction
• D. Ankle plantarflexion torque for forward propulsion

Answer: (D)

Push-off propulsion in late stance is driven by the ankle plantarflexion torque produced by the plantar flexors. As the foot remains on the ground just before toe-off, muscles like the gastrocnemius and soleus actively plantarflex the ankle. This torque, transmitted through the Achilles tendon, creates a ground reaction force that pushes the body forward. So the primary outcome is forward propulsion generated by ankle plantarflexion torque. This isn’t about knee flexion, dorsiflexion, or hip abduction, which involve different motions and muscle groups.

Push-off propulsion in late stance is driven by the ankle plantarflexion torque produced by the plantar flexors. As the foot remains on the ground just before toe-off, muscles like the gastrocnemius and soleus actively plantarflex the ankle. This torque, transmitted through the Achilles tendon, creates a ground reaction force that pushes the body forward. So the primary outcome is forward propulsion generated by ankle plantarflexion torque. This isn’t about knee flexion, dorsiflexion, or hip abduction, which involve different motions and muscle groups.