Activator Method
Gentle chiropractic technique using a handheld mechanical instrument (the Activator) to deliver a rapid, precise, low-force impulse to spinal and peripheral joints.
Presentation
The Activator Method was developed in the 1960s–1970s by Arlan Fuhr and Warren Lee, D.C. The Activator is a pen-shaped handheld device with a spring delivering a very rapid mechanical impulse (less than 3 ms) of low amplitude. The impulse speed exceeds muscle reflex speed, preventing the muscle from contracting in resistance and increasing adjustment efficacy. The method also includes a functional leg length analysis protocol.
Creators: Arlan Fuhr, D.C. and Warren Lee, D.C. (1960s–1970s)
Main Indications
- Patients reluctant to manual manipulation
- Elderly (bone fragility)
- Post-spinal surgery
- Advanced cervical osteoarthritis
- Intense acute pain
- Temporomandibular joint disorders (TMJ)
- Children
Contraindications
- Very few (very low-force instrument)
- Caution over recent fracture sites
- Local bone tumors
Medical Disclaimer
The information presented in this article is provided for educational and informational purposes only. It does not constitute medical advice, diagnosis, or treatment prescription. If in doubt, always consult your physician or a qualified healthcare professional. The techniques described do not replace conventional medical treatment.