FND Education Project

REFERENCE · RECOVERY TECHNIQUE

Electrical Stimulation as a Movement Adjunct

Most likely fit: After assessment, a timed sensory or motor cue may help the person recognize and practise one functional movement—such as ankle dorsiflexion during swing or wrist extension during reach—and the response can be integrated into active task practice. [Emerging and uncertain evidence]

Not a stand-alone treatment: Electrical stimulation is not a diagnostic test, a punishment for weak movement or evidence that the person was not trying. Home use requires device-specific instruction and review.

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What the terms mean

Neuromuscular electrical stimulation sends controlled electrical pulses through skin electrodes to activate a motor nerve and produce or assist a muscle contraction. Functional electrical stimulation times that activation to a task—for example, helping lift the forefoot during the swing part of a step. TENS mainly aims to change sensation or pain and is not the same intervention.

The device may make a movement or sensation easier to notice, but the rehabilitation goal is active movement within a useful task. Turning the intensity higher is not automatically better.

Anatomy in everyday language

For foot clearance, stimulation may target the common fibular nerve near the outside of the knee or the tibialis anterior motor point at the front of the shin, depending on the device and goal. This can produce ankle dorsiflexion (lifting the front of the foot) and sometimes eversion (turning the sole slightly outward). Upper-limb placement depends on the exact movement, such as wrist or finger extension. These sites are clinical descriptions, not instructions for self-placement.

What a trial may look like

A trained clinician checks whether stimulation is suitable, examines the skin and sensation, places the electrodes, and gradually tests a tolerable response. The pulse is then paired with your own attempt and a real task. The clinician records whether movement, comfort or function improves and whether the benefit remains when stimulation is reduced or removed.

Stop and report pain, burning, persistent redness, skin damage, marked distress, an unexpected movement or worsening that does not settle. Do not place electrodes or change settings based on an internet diagram.

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Do not apply, reposition or increase a device unless you have been trained for that exact plan. Check that the person can reach the stop control and follow the written skin-check instructions. Electrical stimulation should never be used to force practice or test whether weakness is “real.”

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Define the modality and goal

Name the modality—sensory-level stimulation, neuromuscular electrical stimulation or task-timed functional electrical stimulation—and the target outcome. Confirm that a device-produced movement can be linked to voluntary, automatic or task-oriented practice. Do not use an observable contraction alone as a treatment endpoint.

Anatomical selection

Select the peripheral nerve or motor point from the desired joint action and the person’s anatomy. For ankle dorsiflexion, assess whether common-fibular-nerve stimulation produces appropriate dorsiflexion without excessive inversion or discomfort; alternative electrode placement may target tibialis anterior more selectively. For upper limb, consider wrist and finger extensors, forearm position, grasp-release goal and skin/sensory status. Translate placement and purpose for the patient before activation.

Explicit clinical sequence

  1. Review diagnosis, coexisting neurological or musculoskeletal impairment and the exact functional target.
  2. Complete the contraindication and precaution screen required by the device instructions, local electrotherapy policy and professional competencies. Include implanted electronic devices, pregnancy context, suspected thrombosis or malignancy at the site, impaired skin integrity or sensation, infection, epilepsy-related considerations and areas where current could affect the anterior neck or other vulnerable structures. These are not identical absolute rules for every device; resolve them before treatment.
  3. Inspect and clean the skin, document sensation and choose electrodes appropriate to the target and device.
  4. Increase stimulation gradually while communicating with the patient. Establish the lowest useful and tolerable sensory or motor response.
  5. Pair stimulation with the person’s active attempt and an external task cue. Time it to the relevant movement phase.
  6. Use a brief, predefined trial. Recheck skin, pain, fatigue, distress and movement quality.
  7. Compare function with and without stimulation. Continue only when there is a useful net effect and a plan for active carryover.
  8. If prescribed for home use, provide device-specific electrode mapping, settings limits, skin checks, cleaning, stop criteria and review date in writing.

Measures, progression and discontinuation

Measure the actual target: toe clearance and trips, step continuity, grasp-release, task assistance or participation. Record stimulation parameters in the clinical record, but do not present them as universal settings. Progress by improving timing, reducing assistance and increasing carryover into the task—not simply raising amplitude. Discontinue when it is ineffective, poorly tolerated, causing skin problems, increasing dependence without functional gain or no longer linked to the agreed goal.

Evidence boundary

Specialist consensus mentions electrical stimulation as a possible adjunct for functional weakness. Direct controlled evidence for a specific device, target, parameter set or home protocol in FND is insufficient. The technique therefore remains emerging and uncertain even when it produces an immediate contraction. [1][2]

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Research and Sources

Citation Full citation
[1] Nielsen G, Stone J, Matthews A, et al. Physiotherapy for functional motor disorders: a consensus recommendation. Journal of Neurology, Neurosurgery & Psychiatry. 2015;86(10):1113–1119. FND-CIT-0028. https://doi.org/10.1136/jnnp-2014-309255
[2] Nielsen G, Stone J, Lee TC, et al. Specialist physiotherapy for functional motor disorder in England and Scotland (Physio4FMD). The Lancet Neurology. 2024;23(7):675–686. This programme-level trial does not establish electrical stimulation itself. FND-CIT-0029. https://doi.org/10.1016/S1474-4422(24)00135-2

Detailed technique page created: September 10, 2026 · Specialist electrotherapy and accessibility review pending

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