Evidence map›Paper›PMID 24161386›Full record

ArticleJournal of manipulative and physiological therapeutics

Effects of unilateral facet fixation and facetectomy on muscle spindle responsiveness during simulated spinal manipulation in an animal model.

William R Reed, Cynthia R Long, Joel G Pickar

Abstract readComparative Study
In one paragraph

Article in Journal of manipulative and physiological therapeutics. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

15 citing papers in PubMed.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors.

William R ReedAssociate Professor, Palmer Center for Chiropractic Research, Davenport, Iowa. Electronic address: william.reed@palmer.edu.
Cynthia R Long
Joel G Pickar

Funding

RENOVATION OF PALMER CENTER FOR CHIROPRACTIC RESEARCHC06RR015433 · NCRR · PALMER COLLEGE OF CHIROPRACTIC · PI MEEKER, WILLIAM C · 2000 to 2000
$1.3M
Effect of Lumbar Hypo & Hypermobility on Sensory Responses to Spinal ManipulationK01AT005935 · NCCIH · PALMER COLLEGE OF CHIROPRACTIC · PI REED, WILLIAM RAY · 2010 to 2014
$638k
NCCIH NIH HHS K01 AT005935NCCIH NIH HHS K01AT005935NCRR NIH HHS C06 RR015433NCRR NIH HHS C06 RR15433
6 · The paper itself

Abstract

objectivesManual therapy practitioners commonly assess lumbar intervertebral mobility before deciding treatment regimens. Changes in mechanoreceptor activity during the manipulative thrust are theorized to be an underlying mechanism of spinal manipulation (SM) efficacy. The objective of this study was to determine if facet fixation or facetectomy at a single lumbar level alters muscle spindle activity during 5 SM thrust durations in an animal model.

methodsSpinal stiffness was determined using the slope of a force-displacement curve. Changes in the mean instantaneous frequency of spindle discharge were measured during simulated SM of the L6 vertebra in the same 20 afferents for laminectomy-only and 19 laminectomy and facet screw conditions; only 5 also had data for the laminectomy and facetectomy condition. Neural responses were compared across conditions and 5 thrust durations (≤ 250 milliseconds) using linear-mixed models.

resultsSignificant decreases in afferent activity between the laminectomy-only and laminectomy and facet screw conditions were seen during 75-millisecond (P < .001), 100-millisecond (P = .04), and 150-millisecond (P = .02) SM thrust durations. Significant increases in spindle activity between the laminectomy-only and laminectomy and facetectomy conditions were seen during the 75-millisecond (P < .001) and 100-millisecond (P < .001) thrust durations.

conclusionIntervertebral mobility at a single segmental level alters paraspinal sensory response during clinically relevant high-velocity, low-amplitude SM thrust durations (≤ 150 milliseconds). The relationship between intervertebral joint mobility and alterations of primary afferent activity during and after various manual therapy interventions may be used to help to identify patient subpopulations who respond to different types of manual therapy and better inform practitioners (eg, chiropractic and osteopathic) delivering the therapeutic intervention.

Indexed as

AnimalsBone ScrewsCatsDisease Models, AnimalElectric StimulationLaminectomyLumbar VertebraeMaleManipulation, SpinalMechanoreceptorsMuscle, SkeletalMuscle SpindlesNeural ConductionRandom AllocationReference ValuesSensitivity and SpecificityChiropracticManipulation SpinalMuscle SpindleNeurons AfferentZygapophyseal Joint

Identifiers

PMID24161386
PMCPMC3852908

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.