BlueCross BlueShield of Tennessee Medical Policy Manual

Piezoelectric Sensor Analysis and Oscillating Force Delivered Vertebral Adjustment in the Evaluation and Treatment of the Spinal Column


Piezoelectric sensor (i.e., piezoelectric accelerometer) technology is utilized for the purpose of analyzing the mobility of each segment of the spinal column. Piezoelectric measuring systems have been historically used by industry in the measurement of force, pressure, acceleration, vibration, and/or strain (e.g., pressure changes in liquids and gases such as in shock tube studies, industrial machinery vibration monitoring and diagnosing out-of-balance conditions/displacement of rotating parts).

When used in the evaluation/assessment of the spinal column, piezoelectric sensor technology is intended for the purpose of determining if normal motion is occurring in the spine. The instrument is placed against a segment of the spinal column and a vibratory pulse is emitted by the device. The reading is recorded and graphically displayed on a computer screen and the waveform presented reportedly indicates the degree of rigidity (i.e., fixation, mechanical impedance) of each vertebra that is analyzed.

As a treatment for the spinal column, oscillating force is an instrument-delivered vibratory adjustment used for the purpose of increasing the mobility of each treated spinal vertebra by reducing or eliminating fixation (i.e., mechanical impedance). It is possible that separate devices could be used in the application of the piezoelectric sensor technology and/or oscillating force; however, at present the primary device marketed for these purposes, the Pro-Adjuster® (i.e., S.M.A.R.T.-Adjuster®), utilizes the same tuning fork like hand-held instrument for the spinal piezoelectric sensor analysis and the oscillating force delivered adjustment. The device is used as both a diagnostic and therapeutic instrument.




There is an absence of peer-reviewed literature demonstrating the effectiveness of piezoelectric sensor (i.e., piezoelectric accelerometer) technology in the treatment and evaluation of the spinal column. Comparative studies of this technology to current standard chiropractic treatments are not available.

No current references to the technology were found in a search of the following professional organizations:


Council on Chiropractic Practice. (2015). Clinical practice guideline: chiropractic care for low back pain. Retrieved February 19, 2019 from 

International Chiropractors Association. (2008). Best practices & practice guidelines; chapter 3: choice of chiropractic technique. Retrieved April 4, 2017 from

U.S. Food and Drug Administration. (1997, January). Center for Devices and Radiological Health. 501(k) Premarket Notification Database. K962239. Retrieved September 16, 2010 from 




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