During loading response, which movement is most characteristic of the knee and ankle?

During loading response, which movement is most characteristic of the knee and ankle?

• A. Knee flexion with ankle plantarflexion
• B. Knee extension with ankle dorsiflexion
• C. Knee flexion with ankle dorsiflexion
• D. Knee extension with ankle plantarflexion

Answer: (A)

During loading response the body must absorb impact and begin weight transfer. The knee actively flexes to cushion the body, while the ankle plantarflexes as the heel lowers and the foot comes into contact with the ground. This combination—knee flexion with ankle plantarflexion—matches the functional role of this phase: shock absorption and controlled progression of the tibia over the foot. Knee extension would reduce shock absorption, and ankle dorsiflexion at this moment would imply a different foot position than what happens as the foot accepts load from heel strike to foot flat.

During loading response the body must absorb impact and begin weight transfer. The knee actively flexes to cushion the body, while the ankle plantarflexes as the heel lowers and the foot comes into contact with the ground. This combination—knee flexion with ankle plantarflexion—matches the functional role of this phase: shock absorption and controlled progression of the tibia over the foot. Knee extension would reduce shock absorption, and ankle dorsiflexion at this moment would imply a different foot position than what happens as the foot accepts load from heel strike to foot flat.