When it comes to modern chiropractic care, one of the most common questions patients and doctors ask is: “What’s the best chiropractic adjusting instrument?”
The main options are the Activator®, Impulse iQ®, ArthroStim®, and the PulStar® system. Each has unique features, but not all are created equal.
Some instruments deliver abrupt, mechanical tapping that patients may find uncomfortable or unsettling. PulStar, by contrast, combines computerized analysis, precision impulses, and patient-friendly visuals to make care gentle, effective, and reassuring.
1. Activator Method®: The Original Handheld Device
The Activator is a spring-loaded handheld tool that has been around for decades. Chiropractors appreciate its portability and low cost.
Pros:
- Affordable and portable
- Delivers quick, single impulses
- Familiar, widely used
Cons:
- Produces a rigid, one-note jolt that can feel abrupt and mechanical
- No computerized analysis or data tracking
- Patients often can't tell what was adjusted
2. Impulse iQ®: Multiple-impulses and Mechanization
The Impulse iQ is an electronic handheld device that delivers multiple impulses with basic feedback.
Pros:
- Faster impulse rate than some mechanical devices
- Simple to learn and use
- Comfortable for some patients compared to manual adjusting
Cons:
- Patients often describe the sensation as sudden bursts of tapping — quick, but lacking the comfort of computer precision
- Minimal diagnostic capability
- No patient-friendly visuals or measurable data
3. ArthroStim®: A Multi-Thrust Tool
The ArthroStim provides 12 rapid thrusts per second, which some chiropractors use for sensitive patients or soft tissue work. Arthrostim is not considered an adjusting instrument.Pros:
- Delivers multiple thrusts in quick succession
- Helpful for basic soft tissue application
- Reduces strain on the practitioner
Cons:
- Sensation can feel like unnatural, repetitive jolts
- Force consistency depends on operator technique
- No computerized analysis or progress tracking
4. PulStar®: Computerized Precision and Patient Engagement
The PulStar System is not just an adjusting tool — it’s a computerized analysis and treatment platform. Unlike devices that feel harsh or abrupt, PulStar delivers gentle, computer-controlled impulses tailored to each patient.
Pros:
- Impulses at 1 to 90 per second
- Computer-calibrated impulse force that feels smooth, controlled, and comfortable
- Computerized analysis and adjustment progress tracking
- Force and impulse rate change based on biofeedback
- Patient-friendly visuals and measurable data
- Can adjust the spine and treat extremities, and soft tissue
Cons:
- Larger investment compared to handheld tools
- Requires brief training — but most doctors find the learning curve well worth the long-term benefits
| PulStar | Activator Activator V |
Neuromechanical Innovations Impulse |
IMPAC Inc Arthrostim |
|
|---|---|---|---|---|
| Adjusting Style | Computer-controlled impulses, 1–90 per second | Spring-loaded, single impulse | Electronic impulses with limited feedback | 1–12 rapid thrusts per second |
| Patient Sensation | Gentle, smooth, computer-controlled impulses tailored to each patient | Rigid, one-note jolt that can feel abrupt and mechanical | Sudden bursts of tapping — quick, but lacking the comfort of computer calibration | Unnatural, repetitive jolts |
| Diagnostic Capability | Full computerized analysis + adjustment progress tracking | None | Minimal | None |
| Force Adaptability | Computer-calibrated with biofeedback for consistency | Fixed, one-size | Some limites feedback | Operator-dependent |
| Patient Engagement | Clear visuals, measurable data, before-and-after tracking | None | No patient-friendly visuals or measurable data | None |
| Comfort & Safety | Smooth, consistent, and patient-friendly | Can feel abrupt and mechanical | Quick but less comfortable without calibration | Can feel repetitive and unnatural |
| Versatility | Spine, extremities, soft tissue; positional system | Spine only | Spine + some extremities | Extremities, soft tissue - not considered an adjusting instrument |
| Practice Differentation | High - data-driven, modern, and trusted | Low | Moderate | Moderate |
| Investment & Training | Larger investment, short training — long-term payoff | Low cost, minimal training | Moderate cost, simple to learn | Moderate cost, operator skill critical |
Why the PulStar Is the Best Choice
While Activator, Impulse, and ArthroStim each have their uses, they share the same drawbacks:
- They rely on abrupt, mechanical tapping
- They provide little or no objective data
- They give patients no visual proof of progress
PulStar is different:
- Smooth, computer-guided impulses - gentle yet precise
- Visual before-and-after graphs patients understand immediately
- Objective analysis + treatment in one advanced system
That’s why chiropractors worldwide — in the U.S., Canada, China, India, and beyond — call PulStar the gold standard in instrument-assisted chiropractic care.
