What effect does an AFO with a flexible ankle provide during gait?

An AFO (ankle-foot orthosis) with a flexible ankle is designed to support the foot and ankle while allowing for some degree of motion. This flexibility can enhance propulsion at toe-off during gait, which is the phase where the toes push off the ground to initiate the next step. By permitting controlled dorsiflexion and plantarflexion, a flexible AFO can help in transferring weight and generating forward motion, thereby improving the efficiency and effectiveness of the gait cycle.

For individuals who may have weakness in dorsiflexion or plantarflexion, this design allows them to maintain a more natural gait pattern. The enhanced propulsion provided by a flexible ankle helps in reducing the risk of tripping and improves overall walking speed, allowing individuals to ambulate more effectively.

This aspect of flexibility is particularly beneficial in individuals who have some functional muscle strength, as it works in concert with their existing capabilities, fostering a more dynamic and efficient gait compared to a rigid AFO, which may restrict movement and limit propulsion.