What is described as the contact point during heel strike?

During heel strike, the primary contact point of the foot with the ground is typically the lateral aspect of the calcaneus. This occurs as the foot strikes the ground, initiating the body's weight transfer and preparing for the subsequent phases of the gait cycle. The lateral calcaneus plays a crucial role in absorbing impact and providing stability as the leg moves forward.

The other options do not serve as the main initial contact areas during heel strike. The medial calcaneus, located on the inside of the heel, is not the primary contact point in this phase. The anterior forefoot comes into play later in the gait cycle, primarily during the push-off phase. The posterior heel, while involved in the overall structure of the foot, does not directly serve as the initial contact point during heel strike. Thus, understanding the mechanics of the lateral calcaneus is essential for comprehending the dynamics of walking or running.