What is IASTM — and is it the same as Graston or muscle scraping?
IASTM stands for Instrument Assisted Soft Tissue Mobilization — a hands-on treatment where your physical therapist uses specialized tools to treat tight, stiff, or scarred soft tissue. Graston and “muscle scraping” are commonly used names for the same general family of technique. So yes, they’re closely related — but not identical. The goal of all of them is the same: influence how your tissue moves so you can move better, too.
At Achieve Physical Therapy, we use IASTM as one piece of a larger, personalized plan — not a standalone fix.
What IASTM actually is
IASTM involves a smooth, contoured tool (often stainless steel) that glides along the skin with a small amount of pressure. It’s designed to help your therapist:
Detect areas of restriction in muscle, tendon, fascia, or scar tissue
Apply targeted input to those areas
Improve how tissues slide and load
Most patients describe it as a firm, deep pressure — sometimes with a light pink or redness in the treated area afterward. That’s a normal response and usually fades quickly.
How IASTM compares to Graston and “muscle scraping”
Here’s the quick breakdown:
IASTM is the umbrella term for the technique itself.
Graston Technique is a specific, branded system with its own tools and training.
Muscle scraping is a casual term — it describes what it looks like, not a specific technique or credential.
So when someone offers “muscle scraping,” that could be IASTM, Graston, Gua Sha, or an informal approach. The technique matters less than who’s using it and why. A licensed physical therapist using IASTM as part of a plan is very different from a social media trend for defining cheek bones.
Who IASTM is for
IASTM is especially helpful for people dealing with:
Old injuries that never fully resolved
Scar tissue after surgery
Chronic tight spots (plantar fascia, IT band, calves)
Tendinopathies (Achilles, patellar tendon, tennis/golfer’s elbow)
Stubborn range-of-motion limitations
It works best when it’s paired with movement. Tissue change without loading it afterward tends to fade quickly; movement locks the gains in.
What a session at Achieve looks like
A typical session using instrument assisted soft tissue mobilization includes:
A quick reassessment of the area we’re targeting
IASTM applied in a specific direction and dose
Follow-up with targeted mobility and strengthening exercises
A short home plan so the change sticks
We never apply IASTM randomly. The direction, pressure, and dose are chosen based on what your tissue actually needs.
Does IASTM hurt?
It shouldn’t. There’s usually a strong, deep pressure sensation, and you may feel a little soreness the next day — similar to a good workout. Sharp or lasting pain is not the goal. We adjust pressure and technique based on how your body is responding in real time.
Bottom line
IASTM, Graston, and muscle scraping are closely related — but the results come from a skilled clinician using the right tool, in the right direction, on the right tissue, for the right reason.
If a nagging tight spot, old injury, or scar tissue is limiting how you move, a free 20-minute injury consultation is a good place to start.
Book directly at achieveptwellness.com —
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