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Characteristics of Paraspinal Muscle Spindle Response

By Frank M. Painter|June 24, 2017|Instrument Adjusting|

Characteristics of Paraspinal Muscle Spindle Response to Mechanically Assisted Spinal Manipulation: A Preliminary Report

SOURCE: J Manipulative Physiol Ther. 2017 (Jun 17) [Epub]

William R. Reed, DC, PhD, Joel G. Pickar, DC, PhD, Randall S. Sozio, BS, LATG, Michael A.K. Liebschner, PhD, Joshua W. Little, DC, PhD, Maruti R. Gudavalli, PhD

Palmer Center for Chiropractic Research,
Palmer College of Chiropractic,
Davenport, IA

OBJECTIVES: The purpose of this preliminary study is to determine muscle spindle response characteristics related to the use of 2 solenoid powered clinical mechanically assisted manipulation (MAM) devices.

METHODS: L6 muscle spindle afferents with receptive fields in paraspinal muscles were isolated in 6 cats. Neural recordings were made during L7 MAM thrusts using the Activator V (Activator Methods Int. Ltd., Phoenix, AZ) and/or Pulstar (Sense Technology Inc., Pittsburgh, PA) devices at their 3 lowest force settings. Mechanically assisted manipulation response measures included (a) the time required post-thrust until the first action potential, (b) differences in mean frequency (MF) and mean instantaneous frequency (MIF) 2 seconds before and after MAM, and (c) the time required for muscle spindle discharge (MF and MIF) to return to 95% of baseline after MAM.

RESULTS: Depending on device setting, between 44% to 80% (Pulstar) and 11% to 63% (Activator V) of spindle afferents required >6 seconds to return to within 95% of baseline MF values; whereas 66% to 89% (Pulstar) and 75% to 100% (Activator V) of spindle responses returned to within 95% of baseline MIF in <6 seconds after MAM. Nonparametric comparisons between the 22 N and 44 N settings of the Pulstar yielded significant differences for the time required to return to baseline MF and MIF.

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Neural Responses to the Mechanical Characteristics

By Frank M. Painter|June 23, 2017|Subluxation|

Neural Responses to the Mechanical Characteristics of High Velocity, Low Amplitude Spinal Manipulation: Effect of Specific Contact Site

The Chiro.Org Blog

SOURCE: Man Ther. 2015 (Dec); 20 (6): 797–804

William R. Reed, Cynthia R. Long, Gregory N. Kawchuk, and Joel G. Pickar

Palmer Center for Chiropractic Research,
Davenport, IA, USA.

BACKGROUND: Systematic investigations are needed identifying how variability in the biomechanical characteristics of spinal manipulation affects physiological responses. Such knowledge may inform future clinical practice and research study design.

OBJECTIVE: To determine how contact site for high velocity, low amplitude spinal manipulation (HVLA-SM) affects sensory input to the central nervous system.

DESIGN: HVLA-SM was applied to 4 specific anatomic locations using a no-HVLA-SM control at each location randomized in an 8×8 Latin square design in an animal model.

METHODS: Neural activity from muscle spindles in the multifidus and longissimus muscles were recorded from L6 dorsal rootlets in 16 anesthetized cats. A posterior to anterior HVLA-SM was applied through the intact skin overlying the L6 spinous process, lamina, inferior articular process and L7 spinous process. HVLA-SMs were preceded and followed by simulated spinal movement applied to the L6 vertebra. Change in mean instantaneous discharge frequency (ΔMIF) was determined during the thrust and the simulated spinal movement.

RESULTS: All contact sites increased L6 muscle spindle discharge during the thrust. Contact at all L6 sites significantly increased spindle discharge more than at the L7 site when recording at L6. There were no differences between L6 contact sites. For simulated movement, the L6 contact sites but not the L7 contact site significantly decreased L6 spindle responses to a change in vertebral position but not to movement to that position.

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Changes in Muscle Spasticity in Patients With Cerebral Palsy

By Frank M. Painter|June 18, 2017|Cerebral Palsy|

Changes in Muscle Spasticity in Patients With Cerebral Palsy After Spinal Manipulation: Case Series

The Chiro.Org Blog

SOURCE: J Chiropractic Medicine 2016 (Dec); 15 (4): 299—304

Oleh Kachmar, MD, PhD, Taras Voloshyn, MD, and Mykhailo Hordiyevych, MD

Innovative Technologies Department,
International Clinic of Rehabilitation,
Truskavets, Ukraine.

OBJECTIVE: The purpose of this case series was to report quantitative changes in wrist muscle spasticity in children with cerebral palsy after 1 spinal manipulation (SM) and a 2-week course of treatment.

METHODS: Twenty-nine patients, aged 7 to 18 years, with spastic forms of cerebral palsy and without fixed contracture of the wrist, were evaluated before initiation of treatment, after 1 SM, and at the end of a 2-week course of treatment. Along with daily SM, the program included physical therapy, massage, reflexotherapy, extremity joint mobilization, mechanotherapy, and rehabilitation computer games for 3 to 4 hours’ duration. Spasticity of the wrist flexor was measured quantitatively using a Neuroflexor device, which calculates the neural component (NC) of muscle tone, representing true spasticity, and excluding nonneural components, caused by altered muscle properties: elasticity and viscosity.

RESULTS: Substantial decrease in spasticity was noted in all patient groups after SM. The average NC values decreased by 1.65 newtons (from 7.6 ± 6.2 to 5.9 ± 6.5) after 1 SM. Another slight decrease of 0.5 newtons was noted after a 2-week course of treatment. In the group of patients with minimal spasticity, the decrease in NC after the first SM was almost twofold-from 3.93 ± 2.9 to 2.01 ± 1.0. In cases of moderate spasticity, NC reduction was noted only after the 2-week course of intensive treatment.

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Cerebral Palsy and Chiropractic Page

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Chiropractic Management of a Patient With Chronic Fatigue

By Frank M. Painter|June 17, 2017|Chronic Fatigue Syndrome|

Chiropractic Management of a Patient With Chronic Fatigue: A Case Report

The Chiro.Org Blog

SOURCE: J Chiropractic Medicine 2016 (Dec); 15( 4): 314—320

Christopher T. Arick, DC, MS

Clinical Sciences Department,
National University of Health Sciences,
Pinellas Park, FL

OBJECTIVE: The purpose of this case report was to describe the examination and management of a patient with chronic fatigue.

CLINICAL FEATURES: A 34-year-old woman presented to a chiropractic clinic with complaints of fatigue and inability to lose weight for 2 years. When tested, she was found to have high serum thyroglobulin antibodies, low serum vitamin D3, low saliva dehydroepiandrosterone-sulfate, and low saliva total and diurnal cortisol.

INTERVENTION AND OUTCOME: The patient was placed on an anti-inflammatory ancestral diet and given recommendations to decrease the aerobic intensity of her exercise routine. On the basis of the result of conventional and functional laboratory tests, she was prescribed a treatment plan of targeted supplementation. After 12 weeks of application of dietary, lifestyle, and supplementation recommendations, the patient reported experiencing increased energy and weight loss of 15 pounds. Her thyroglobulin antibodies returned within reference range, salivary cortisol increased and closely followed the proper circadian rhythm, and dehydroepiandrosterone-sulfate increased.

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Fibromyalgia and Chiropractic Page

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Happy Father’s Day! (2017)

By Frank M. Painter|June 16, 2017|Announcement|

Happy Father’s Day! (2017)

The Chiro.Org Blog

Happy Father’s Day

to Chiropractic Fathers,

wherever you may be!

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Chiropractic Management of Neck-Tongue Syndrome

By Frank M. Painter|June 13, 2017|Chiropractic Care, Neck Pain, Neck-Tongue Syndrome|

Chiropractic Management of a Patient With Neck-Tongue Syndrome: A Case Report

The Chiro.Org Blog

SOURCE: J Chiropractic Medicine 2016 (Dec); 15 (4): 321–324

Craig S. Roberts, DC

Private Practice,
Nevada City, CA

OBJECTIVE: The purpose of this case report was to describe the chiropractic management of a patient with neck-tongue syndrome (NTS).

CLINICAL FEATURES: A 34-year-old female patient sought treatment at a chiropractic clinic for symptoms involving neck pain associated with left-sided paresthesia of the tongue that had persisted for >2 years. A diagnosis of NTS was made.

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Case Reports Section

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