An AFO is a device that’s put on the foot, knee, or arm. There are two general types of AFOs: those that are made from moulded plastic or another material and those that articulate, which means they can bend at the ankle, knee, or elbow. An AFO can help with these symptoms: cerebral palsy, polio, and multiple sclerosis. They might help to either support the weak or the atrophied limb or help the contracted limb to function better. They can be used in place of morphine after medical procedures and during rehabilitation for sports injuries. There are three types of articulated AFOs: Tamarack, Okhlahoma, Camber Axis, Double Action and Triple Action. These are used for limiting ankle motion and for medio-lateral stability.