Our Methods
Nervous About Joint Cracking? How the Low-Force Activator Instrument & IASTM Fascia Tools Work

Key Takeaways
- Sound is not the goal
- The “pop” sometimes heard during an adjustment comes from gas bubbles forming in joint fluid—not bones grinding—and making a sound is never the goal of care.
- The Activator instrument
- A handheld spring-loaded instrument that delivers a quick, gentle impulse without twisting the neck or lower back—ideal if you dislike cracking sounds, are pregnant, or prefer light-force care.
- IASTM
- Smoothly contoured stainless-steel tools glided gently over the skin to restore smooth movement to tight fascia.
1. Chiropractic Care Does Not Have to Mean “Cracking Bones”
“I’d like to try chiropractic care, but I’m afraid of having my neck twisted and cracked,” or “I had a forceful adjustment once and felt sore afterward.” Because social-media videos often highlight loud joint pops, many people assume chiropractic care is all about cracking joints.
In reality, that popping sound is simply dissolved gas in the joint fluid forming a tiny bubble as pressure changes—not bones rubbing together. And producing a sound is never the purpose of an adjustment.
Our goal is to help stiff joints and tissues move smoothly again—and there are gentle, non-cracking ways to do that. Here are two instruments we use at Rooton.
2. The Activator Adjusting Instrument
Developed by chiropractors in the United States in the 1960s, the Activator is one of the most widely researched and used chiropractic instruments in the world.
Shaped like a handheld pen with a soft rubber tip, it delivers a brief, controlled tap accompanied by a quiet “click.”
Why such a light tap works
When the body is pushed slowly or forcefully, muscles reflexively tense up to guard the joint. Because the Activator’s impulse is extremely quick, it reaches the joint’s sensory receptors before the surrounding muscles brace—allowing a gentle adjustment without twisting the neck or spine.
It is a comfortable option for clients who dislike joint-popping sounds, pregnant clients (after reviewing your stage of pregnancy and physician’s guidance), children visiting with a parent, or anyone concerned about bone fragility.

3. IASTM (Instrument-Assisted Myofascial Care)
Long hours of desk work or old sprains can leave the fascia wrapping your muscles stiff and less able to glide smoothly.
IASTM (Instrument Assisted Soft Tissue Mobilization) uses smoothly contoured stainless-steel tools glided gently across oiled skin:
- Detecting subtle restrictions: The smooth metal surface transmits tiny textural catches to the practitioner’s hand, helping locate tight spots accurately.
- No heavy pressing: Rather than crushing tissues with force, we adjust the angle and speed of the glide to restore smooth fascial movement.

4. Combining Hands-On Care and Instruments
At Rooton, we combine the sensitivity of hands-on care—feeling how your breath and muscles respond—with the precision of instruments. Even when we use manual adjustments, we always release surrounding fascia first so we never twist a guarded joint abruptly.
If you prefer a session with no joint-popping sounds at all, simply let us know during your consultation and we will tailor your care using instruments and gentle myofascial release.
5. A Note from Mr. Sugiyama
If fear of loud cracking has kept you from trying chiropractic care, please know there are gentle alternatives. We always check how your body responds and decide on the most comfortable method together.

