Used as an alternative to an AFO in many cases, FES is one of the most recent advancement in the field of orthotics and can address weakness and foot drop experienced by those affected by MS, stroke, spinal cord injury or traumatic brain injury. The device uses gentle electrical signals to stimulate the peroneal nerve, which is located just below, and to the outside of the knee. This in turn activates the dorsiflexor muscles which are responsible for lifting the foot off the ground. Sensors in the FES system determine the appropriate time during the users gait cycle to activate the stimulation. There are 2 main FES systems available. CTOPS offers complimentary evaluation of these devices in all locations.