IASTM uses contoured stainless-steel instruments to locate and treat areas where tissue layers have stopped sliding freely across each other. The instrument detects texture changes hands cannot feel and delivers a controlled mechanical stimulus that supports tissue remodeling and reduces pain sensitivity. At Fit Body Therapy in Los Altos it is used within orthopedic sessions, one-on-one with Angelo dela Cruz, practicing since 1996.
What the Instrument Actually Adds
Two things, and neither is more force.
The first is detection. Drawn across tissue, a steel instrument transmits vibration back to the practitioner’s hand. Texture changes and areas of restricted glide register as a distinct feedback — sometimes a fine grittiness — that is genuinely difficult to perceive through fingers alone. In practice this frequently relocates treatment: the area that lights up under the instrument is often adjacent to, not identical with, where the client reports pain.
The second is specificity. The instrument’s edge concentrates input into a narrow line of tissue. Fingers spread load; the instrument focuses it, which allows precise work along a tendon border or a specific tissue interface rather than treating the whole region.
How It Works — Without the Overclaiming
IASTM is commonly described as breaking down scar tissue or breaking up adhesions. That language is vivid and mechanically implausible — the forces involved are nowhere near what would be required to rupture organized collagen, and if they were, the treatment would injure you.
The better-supported account has two parts. Mechanically, controlled stimulus applied to restricted tissue prompts a local fibroblast and remodeling response, which over subsequent weeks helps restore glide between layers that had stopped sliding freely. Neurologically — and probably accounting for much of the immediate change people feel — the instrument delivers a large volume of sensory input that reduces pain sensitivity and lowers protective guarding, which is why range of motion often improves before any tissue has had time to remodel.
Reduced glide is real and measurable; studies of chronic low back pain have documented meaningfully reduced shear strain between tissue layers. That is a solid foundation. It does not need the scar-tissue mythology bolted on top.
Conditions That Respond Well
- Plantar fasciitis and persistent heel pain
- Tennis elbow and golfer’s elbow — tendon pain that has outlasted rest
- Achilles and patellar tendon restriction
- Post-surgical scar restriction limiting range, once fully healed and cleared
- Chronic low back and IT band restriction
- Rotator cuff pain with limited overhead reach
Your Session
Sessions open with orthopedic assessment to establish what is restricted and why. IASTM passes are applied where indicated, followed by manual myofascial work and joint mobilization — the instrument prepares tissue, the hands do the detailed work.
You finish with two minutes of mobility drills to load the new range while the tissue is responsive, which matters more than most people expect. Mild redness sometimes appears and fades within hours. Most clients resume normal training the next day.
Choosing IASTM Therapy in Los Altos
Fit Body Therapy is at 600 Fremont Avenue in the Rancho Shopping Center, serving Los Altos, Mountain View, Palo Alto, and Sunnyvale.
- Practicing since 1996 — CAMTC certified, AMTA Professional Member, Hendrickson Method
- One-on-one in a private suite, never handed to an assistant
- Instrument work as one component of an assessment-led plan, not the whole treatment
- Free onsite parking; HSA and FSA friendly with detailed receipts
Frequently Asked Questions
Is IASTM the same as Graston Technique?
Graston is one branded IASTM system. The category also includes HawkGrips, FAKTR, and others. The instruments and certification pathways differ; the underlying approach is the same.
Does IASTM hurt? Will I bruise?
Expect firm but tolerable pressure — most people describe warmth and immediate relief. Heavy bruising is not the goal and is not a marker of effective treatment; mild transient redness is normal.
How many sessions will I need?
Acute strains often resolve in one to three visits. Long-standing restriction typically averages four to six sessions with progressive gains at each.
Can I use HSA or FSA funds?
Yes. Sessions are private-pay and detailed receipts support HSA, FSA, and out-of-network reimbursement claims.
Book your IASTM session in Los Altos and find out where the restriction actually is.