Electrotherapy Treatment

ELECTROTHERAPY

Electrotherapy uses controlled electrical currents to affect pain, muscle function, tissue healing, and nerve signaling. It’s a tool in physio, not a standalone fix - it works best when paired with exercise and manual therapy.

Here’s how it’s used:

1. *Main types and what they do*

*TENS - Transcutaneous Electrical Nerve Stimulation*

- Low-voltage current through skin electrodes

- Goal: Pain relief by interfering with pain signals and triggering endorphin release

- Feels like a tingling/buzzing. Used for acute and chronic pain, often for home use

- Evidence is mixed for long-term pain, but it helps some people get through movement/exercise

*NMES - Neuromuscular Electrical Stimulation*

- Stronger current that causes visible muscle contraction

- Goal: Muscle re-education, prevent atrophy post-surgery, strengthen weak muscles

- Common after ACL surgery, stroke, or when you can’t contract quads/glutes voluntarily

- You still need to do active exercises for it to translate to function

*IFC - Interferential Current*

- Two medium-frequency currents cross to create a deeper stimulation

- Goal: Pain relief, reduce muscle spasm, improve circulation

- Feels less prickly than TENS at depth. Used for low back, neck, knee pain

*Ultrasound*

- High-frequency sound waves, not electrical, but grouped here

- Goal: Thermal effect to increase tissue extensibility, non-thermal effect for healing

- Used for tendons, ligaments, muscle tightness. Evidence is modest - depends on dose and technique

*Other: HVGS, Russian stim, microcurrent*

Used for wound healing, edema reduction, pain, or muscle stimulation. Less common now.

2. *What it’s good for*

- Pain modulation to allow you to move and exercise with less guarding

- Muscle activation when voluntary contraction is weak post-injury/surgery

- Reducing acute muscle spasm

- Edema/wound management in some cases

It’s not great as a primary treatment for chronic pain or weakness if you never progress to active rehab.

3. *Limitations and risks*

- Effects are often short-term unless you use the window to move/exercise

- Doesn’t fix the underlying cause - posture, load, biomechanics

- Contraindications: pacemakers, pregnancy over abdomen/pelvis, over carotid sinus, active cancer, impaired sensation in the area

- Won’t work if the electrodes aren’t placed correctly or dose is too low

4. *How a physio decides to use it*

You’ll get electrotherapy if:

- Pain is blocking movement and exercise

- You have muscle inhibition you can’t overcome voluntarily

- It’s part of a phased plan with clear progression off the machine

If your physio plugs you in for 20 min and sends you home without exercises or a plan to wean off, that’s not evidence-based practice.

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Think of electrotherapy like turning down the volume so you can actually do the rehab. The lasting change comes from what you do once the pain is manageable.

Are you looking at this for pain relief, muscle weakness, or something like a post-surgery rehab? I can break down which modality fits best.

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