When does the foot typically begin to supinate?

The foot typically begins to supinate during the push-off phase of the gait cycle. This phase is crucial as it prepares the foot for the transition from weight acceptance to propulsion. As the heel lifts off the ground and the weight shifts to the forefoot, the foot moves into a supinated position, which helps stabilize the ankle and provides a rigid lever for effective push-off. This supination aids in generating force as the foot prepares to propel the body forward, highlighting its importance in efficient gait mechanics.

In contrast, heel strike marks the beginning of the stance phase, where the foot is generally in a neutral or slightly pronated position to absorb shock. During midstance, the foot is typically flat on the ground and not yet beginning to supinate, as it focuses on maintaining balance and weight transfer. Throughout the swing phase, the foot is off the ground and does not engage in supination, since it is not involved in weight-bearing or propulsion activities. Understanding these phases of gait helps clarify how and when the foot transitions into supination during the push-off.