What is the primary function of a rocker sole?

The primary function of a rocker sole is to facilitate a smooth transition from heel-strike to toe-off without requiring the shoe to bend. This design helps to enhance the natural gait cycle, allowing the foot to "rock" over the sole effectively. It can be particularly beneficial for individuals with certain foot conditions or mobility issues, as it can help reduce stress on the joints throughout the lower limb, improve overall ambulation, and aid in propulsion.

In the context of gait, the rocker sole minimizes the need for dorsiflexion at the ankle during the stance phase, providing a natural pivot point that can enhance stability and support. This characteristic is crucial, particularly for those with limited range of motion or various pathologies that hinder normal motion.