Functional Electrical Stimulation
The application of electrical current to paralysed or weakened muscles to produce functional movement, often used in conjunction with or as an alternative to traditional mechanical orthoses.
Full Definition
Functional Electrical Stimulation (FES) is a rehabilitative technology in which low-level electrical pulses are delivered to peripheral nerves or muscles to generate controlled, purposeful contractions in patients with upper motor neuron lesions or muscle weakness. In orthotics, FES is increasingly integrated into devices classified as neuroprostheses or FES orthoses, particularly for foot-drop correction and upper-limb rehabilitation after stroke. Editors must be careful not to conflate FES with TENS (Transcutaneous Electrical Nerve Stimulation), which is used primarily for pain management and does not produce functional movement. Clinical documentation using this term should specify the target muscle group, the stimulus parameters where relevant, and the functional goal. The abbreviation FES should be expanded on first use in all formal documents.
Usage
Usage note: Expand to 'functional electrical stimulation (FES)' on first use. Do not conflate with TENS or generic electrical stimulation therapy.
In Context
- "The patient was fitted with a functional electrical stimulation device to address foot drop that had not responded to a conventional AFO." — Orthotics clinical assessment report
- "Functional electrical stimulation (FES) must not be described as a pain-relief modality; its defining characteristic is the production of functional movement." — Editorial style guide