What to Expect

What Actually Happens During a Chiropractic Adjustment

Reviewed by Dr. Dustin Dukart, DC

If you’ve booked a first visit — or you’re weighing one — here’s what the actual adjustment is like, minute to minute, and why a few things that seem important (the loud pop, especially) really aren’t.

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The short version: the “pop” is a gas-cavity pressure change, not bone hitting bone or anything realigning — and pain relief doesn’t depend on whether a sound happens at all. A silent adjustment is not a failed one.

Position First, Force Second

Most of an adjustment is setup, not push. You’re positioned — seated, face-down on the table, or on your side — so that the one joint being targeted becomes the loosest link in the chain. The slack is taken out of everything around it, the joint is brought right to the end of its available range, and only then does a shallow, quick impulse go in along a specific line.

That line matters. The direction and angle of the thrust — chiropractors call it the line of drive, or the vector — is chosen from what the exam showed, so the force goes into the single joint and the single plane of movement that needs it, and not into the joints on either side. A good adjustment is precise and small. It is not big, and it is not forceful.

Relax — It Genuinely Works Better That Way

A braced, guarding muscle fights the setup and makes the whole thing need more force to accomplish less. The cue you’ll hear — breathe out, let your weight drop into the table — isn’t just bedside manner. A relaxed joint moves on a light, fast impulse; a tense one doesn’t. Staying relaxed also keeps the whole thing more comfortable and more controlled.

The Pop: Fun, Not Necessary

The “crack” is the part people fixate on, and it’s the most misunderstood. It is not bone hitting bone, and nothing is tearing or being forced back into place. Researchers filmed a joint inside an MRI scanner during a crack: the sound tracks a small gas cavity forming in the fluid as the joint surfaces briefly separate — a pressure change, not a structural one (Kawchuk et al., 2015). It’s the same thing as cracking your knuckles, which decades of follow-up has never linked to arthritis.

Here’s the part that matters: the pain relief and the improvement in movement don’t depend on whether a sound happens. A silent adjustment is not a failed one, chasing a louder crack is not a goal, and several of the techniques below don’t produce a pop at all.

“It Feels Like a Bone Is Out of Place” — Usually It Isn’t

A very common description is a spot in the back or neck that feels stuck, jammed, or just “off,” like something needs to click back in. Almost always, that sensation is protective muscle tension wrapped around a joint that isn’t moving well — not a vertebra sitting in the wrong location. Bones don’t slip out and get knocked back in. What an adjustment changes is how that joint and the muscles around it are behaving — not its address.

There’s More Than One Technique

“Getting adjusted” isn’t one fixed thing. The choice comes from the exam and from what you’re comfortable with, and you can always ask for a gentler option.

Manual / diversified. The classic hands-on HVLA thrust — the one most people picture. Quick, shallow, specific.
Side-posture (lumbar roll). Lying on your side with the top leg bent, a rotational setup used mainly for the low back and the sacroiliac joint.
Drop-table (Thompson). A padded section of the table is cocked and drops a fraction of an inch as the thrust is applied, so much less force is needed to move the joint.
Activator / instrument-assisted. A small spring-loaded device delivers one very fast, very light impulse. No twisting, no pop. A good fit if you don’t want a manual thrust, if you’re apprehensive, or where a lighter input is the right call.
Flexion-distraction. A table that gently tractions and flexes the spine in a slow rhythm rather than a thrust — often used when disc-related leg pain is part of the picture.
Mobilisation and soft-tissue work. Slow, controlled joint movement and hands-on muscle work, with no thrust at all. Sometimes that’s the whole treatment.

Instrument and drop-table methods have held up reasonably well against manual thrusts in head-to-head comparisons for everyday mechanical pain (Gemmell & Miller, 2006) — the right technique is the one that fits the joint and the person, not a ranking.

Right Afterward

The most common after-effect is mild soreness or stiffness for a day, similar to starting a new exercise. Some people feel an immediate easing; for others it settles over the following day. Either way, the adjustment is one part of a plan — the movement and exercise you do between visits is what makes the change last.

What Your First Visit Looks Like

An adjustment is never the first thing that happens. The visit starts with a history and a hands-on exam to work out what’s actually driving the problem and whether manual care is a reasonable fit. If it is, we explain what we’re planning before we do it. Here’s the full walk-through of a first visit.

Have a Question About Your Own Back or Neck?

Most new patients are seen within a few days.