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What devices provide nerve stimulation for people with MS and foot drop?

Two different devices can provide nerve stimulation for people with multiple sclerosis (MS) who are experiencing foot drop: the WalkAide and the NESS L300 Foot Drop System. These are both small, battery­operated devices that are worn under the knee and over the peroneal nerve. The device activates the nerve, which in turn signals the leg muscles to pick up the foot.

They are fitted by a physical therapist or an orthotist and have been shown to improve walking speed in some people with MS. However, this technique does not work for everyone with MS because it requires the damage to be contained only in the nerve and muscle used in lifting the foot. If other muscles and nerves in the leg are also damaged, then functional electrical stimulation (FES) will not improve the person’s gait, since it only activates the peroneal nerve.

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