IMS Dry Needling
IMS dry needling (intramuscular stimulation) is a specialised technique used by physiotherapists with post-graduate training in the use of acupuncture needles to release taut bands of muscles in your body. It was developed by a local physician, Dr Chan Gunn, and can be incredibly effective for treating chronic pain and tightness.
Envision has numerous physiotherapists trained to use dry needling as an integrated tool within your assessment and treatment. We have two physiotherapy clinic locations in Vancouver — South Granville and False Creek — to serve you.
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In short
IMS is a form of dry needling we perform as physiotherapists. It treats the nerve-driven cause of chronic muscle pain, not just the local knot. We use it at both Vancouver clinics for stubborn tightness, tension headaches, tendon pain and sciatica.
Is IMS the same as dry needling?
All IMS is dry needling, but not all dry needling is IMS. General dry needling settles the local trigger point in a muscle. IMS — developed here in Vancouver by physician Dr Chan Gunn — goes further and treats the irritated nerve root that drives the muscle to shorten in the first place.
What IMS Treats
IMS works particularly well for muscular pain that has not responded to other treatments. It targets the root cause — the shortened, irritable muscle fibres themselves — rather than masking symptoms.
Chronic Muscle Tightness
Persistent muscle bands that don’t release with stretching or massage often respond rapidly to a few sessions of IMS.
Headaches & Neck Pain
Cervical and upper-trap trigger points are common drivers of tension headaches and chronic neck pain — both classic IMS targets.
Tendonopathies
Achilles, patellar, lateral elbow and rotator-cuff tendon issues often improve when the muscle pulling on the tendon is released.
Sciatica & Nerve-Related Pain
Dr Gunn’s technique is specifically designed to target neuropathic pain — pain driven by irritated nerve roots and the muscles they supply.
IMS vs Dry Needling: What's the Difference?
Most people use the two terms interchangeably. They overlap, but they aren't the same thing — here is where IMS and conventional trigger-point dry needling part ways.
| IMS (Intramuscular Stimulation) | Conventional Dry Needling | |
|---|---|---|
| What it targets | The irritated nerve root (radiculopathy) driving the muscle to shorten | The trigger point or taut band inside the muscle itself |
| Underlying model | Gunn's neuropathic / radiculopathy model — treats the nerve supply, not just the muscle | Trigger-point model — settles the painful spot directly |
| Where needles go | Both the tight muscle and the paraspinal muscles near the related nerve root | Directly into the symptomatic muscle's trigger point |
| Origin | Developed by Vancouver physician Dr Chan Gunn | Evolved from Western trigger-point and acupuncture research |
| Best suited to | Chronic, recurring or nerve-related pain (sciatica, persistent tightness, tendon issues) | Acute, localised muscle pain and single stubborn knots |
| Who performs it at Envision | Physiotherapists with post-graduate IMS certification | Physiotherapists trained in dry needling |
The short version: all IMS is dry needling, but not all dry needling is IMS. When pain keeps coming back, or follows a nerve pattern down a limb, IMS is usually the better fit. Which technique suits you is a call your physiotherapist makes once they've assessed you — you don't have to figure it out beforehand.
IMS Dry Needling: Common Questions
Does IMS dry needling hurt?
When the needle finds a tight band, the muscle grabs and twitches — a quick, deep, cramp-like sensation as it lets go. It passes in a second or two. Most people call it a "good" ache rather than sharp pain, and mild soreness for a day afterward is normal.
How many sessions will I need?
Most people feel a change within two to four sessions. Problems you've carried for years can take longer. We use IMS as one tool inside a wider physiotherapy plan — not a fixed course of treatment — so your physiotherapist reassesses as you go and stops the needling once it has done its job.
Is IMS covered by insurance?
IMS happens inside a regular physiotherapy appointment, so it's covered exactly the way your physiotherapy is — there's no separate fee for the needling. We direct-bill most extended health plans, ICBC and WorkSafeBC at both Vancouver clinics.
Who should not have IMS?
IMS isn't right for everyone. We may hold off if you're pregnant, on blood thinners, have a needle phobia, a skin infection over the area, or certain bleeding disorders. Your physiotherapist screens for all of this at the assessment — and if needling isn't a fit, there's always another way to treat the problem.
Dry Needling Physiotherapists
In alphabetical order. Click a card to read each therapist’s full bio.

Brent Stevenson
Physiotherapist
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Erin Gibb
Physiotherapist
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Frances Carroll
Physiotherapist
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Harminder (Harry) Toor
Physiotherapist
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Marcus Dusseault
Physiotherapist
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Taylor DiBrita
Physiotherapist
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Tracy Barber
Physiotherapist
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Book your IMS appointment with one of our certified dry-needling practitioners.
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