Anatomical leg-length inequality, scoliosis and lordotic curve in unselected clinic patients

Abstract: Anatomic leg length inequality (LLI) and various mechanical measures of the lumbar spine, particularly scoliosis, lordosis and Ferguson’s angle, were analyzed retrospectively from the X-rays of 106 consecutive patients in a private chiropractic practice. Results showed that 40% of the subjects had LLI>6 mm while 70% had LLI>3mm. These data compared closely with studies… Continue Reading »

Cervical spine: Range of motion measurements following Gonstead seated cervical adjustments, whiplash associated disorder case reports

Nansel D, Cremata E, Carlson J, Szlazak M. Effect of unilateral spinal adjustments on goniometrically-assessed cervical lateral-flexion end-range asymmetries in otherwise asymptomatic subjects. J Manipulative Physiol Ther 1989; 12:419-427. (Authors’ abstract) Nansel D, Peneff A, Cremata E, Carlson J. Time course considerations for the effects on unilateral lower cervical adjustments with respect to the amelioration… Continue Reading »

Chiropractic management of a hypertensive patient

Abstract: Objective: Although many chiropractors may treat patients who have concomitant hypertensive disease, there is a paucity of literature on the nuances of case management for these patients. We report a patient who underwent a course of chiropractic care with a previous diagnosis of chronic essential hypertension. Clinical Features: A 38 year old male presented for chiropractic… Continue Reading »

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 »

Effect of unilateral spinal adjustments on goniometrically-assessed cervical end-range asymmetries in otherwise asympotomatic subjects

Abstract: A triple blinded, multiple-measure, experimental protocol was employed in order to investigate the effectiveness of unilateral cervical adjustments on goniometrically assessed cervical lateral-flexion asymmetries. On pretest, subjects selected for the experiments exhibited mean left-right lateral-flexion differences of approximately 14 degrees. In subjects which either received no intervention, or had been subjected only to preliminary… Continue Reading »

Effectiveness of upper vs. lower cervical adjustments with respect to the amelioration of passive rotational vs. lateral-flexion end-range asymmetries in otherwise asymptomatic subjects

Abstract: The effects of cervical spinal adjustments delivered bilaterally either to the upper cervical region (C2-C3) or to the lower cervical region (C6-C7), were compared in groups of asymptomatic subjects exhibiting goniometrically verified left-right rotational or left-right lateral-flexion passive end-range asymmetries of greater than 10 degrees. Goniometric evaluation both prior to, and again within 30… Continue Reading »

Effects of cervical adjustment on lateral-flexion passive end-range asymmetry and on blood pressure, heart rate and plasma catecholamine levels

Abstract: The biomechanical and physiological effects of a single, unilateral lower cervical spinal adjustment delivered to the most restricted side of cervical lateral-flexion passive end-range were examined. Only healthy, asymptomatic male subjects who exhibited goniometrically verified lateral-flexion passive range of motion asymmetries of 10 degrees or greater on the morning of the experiment were chosen… 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 »

Load-Displacement-Time characteristics of the spine under posteroanterior mobilization

Abstract: The load-displacement-time characteristics of the lumbar spine were obtained under simulated central posteroanterior (PA) mobilization. The instrumentation (the spine mobilizer) consisted of a motor-driven force applicator and a pair of displacement transducers. The PA mobility of the L3, L4 and L5 segments of 28 young normal subjects (14 males and 14 females) was examined,… Continue Reading »

Preliminary study of blood pressure changes in normotensive subjects undergoing chiropractic care

Abstract: The purpose of this study was to evaluate the reliability of clinical blood pressure readings and to begin a series of experiments to determine if chiropractic adjustments cause any significant changes in blood pressure. Seventy-five students undergoing routine chiropractic health care at Palmer College of Chiropractic Clinic volunteered to participate in the blood pressure… Continue Reading »

The effects of chiropractic adjustment on distal skin temperature

Abstract: Stimulation of the sympathetic nervous system will cause a reduction in the skin blood flow which can be detected by measuring the skin surface temperature. The purpose of this study was to see whether chiropractic adjustments could affect the activity of the sympathetic nervous system as reflected by changes in distal (fingertip) skin temperature.… Continue Reading »

Time course considerations for the effects of unilateral lower cervical adjustments with respect to the amelioration of cervical lateral-flexion passive end-range asymmetry

Abstract: The initial effectiveness as well as the temporal stability of the effect of cervical spinal manipulation with respect to the amelioration of goniometrically verified cervical lateral-flexion passive end-range asymmetry was examined. Responses of two groups of pain-free subjects were compared: a) those exhibiting end-range asymmetries of greater than 10 degrees who, in addition, had… Continue Reading »