Effect of loading frequency on response of the spine to lumbar posteroanterior forces

Abstract: Objective: The purpose of this investigation was to study the spinal deformations produced by applying a force to a lumbar vertebra and to compare the deformation responses at three different loading rates. Setting: The study was conducted in a laboratory setting using a mechanical device to simulate the manipulative procedure being studied. Subjects: Twelve volunteers (mean age… Continue Reading »

Forces and relative vertebral movements during SMT to unembalmed post-rigor human cadavers: Pecularities associated with joint cavitation

Abstract: Objective: The purpose of this study was to compare the relative movements between adjacent vertebrae that were accompanied by a cavitation sound to those relative movements wherein no cavitation sound was recorded, during spinal manipulative treatments (SMT’s) to T12 of an unembalmed human cadaver. Setting: The experiment was conducted in the gross anatomy laboratory at the… Continue Reading »

Forces exerted during spinal manipulative therapy

Abstract: Spinal manipulative therapy has been widely recognized in the medical fields as a conservative treatment modality for spinal dysfunction and pain. Spinal manipulative therapy consists of an application of a thrusting force on a specific part of the spine in a well-defined direction. The magnitude of this force has been associated with positive treatment… Continue Reading »

Forces used during Gonstead-type chiropractic adjustments

Herzog W, Kawchuk GN, Conway PJ. Relationship between pre-load and peak forces during spinal manipulative treatments. J Neuromusculoskel syst 1993; 1:52-58. (Authors’ abstract) Herzog W. Mechanical and physiological responses to spinal manipulative treatments. J Neuromusculoskel Syst 1995; 3:1-9. (Authors’ abstract) Wood J, Adams AA. Comparison of forces used in selected adjustments of the low back… Continue Reading »