Evidence map›Paper›PMID 28340595›Full record

SynthesisSystematic reviews2017

The risk associated with spinal manipulation: an overview of reviews.

Sabrina Mai Nielsen, Simon Tarp, Robin Christensen, Henning Bliddal, Louise Klokker, Marius Henriksen

Abstract readSystematic Review
In one paragraph

Synthesis in Systematic reviews, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed, 2 pooled it
–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

30 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Adverse events following cervical spine self-manipulation: A systematic review.PM & R : the journal of injury, function, and rehabilitation · 2026
    Pooled it
  2. Pooled it
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  14. Observational
  15. Thrust joint manipulation: just do it!The Journal of manual & manipulative therapy · 2021
    Article
  16. Article
  17. Article
  18. Article
  19. The Flat Earth Theory: is Evidence-Based Physiotherapy a Sphere?The Journal of manual & manipulative therapy · 2021
    Article
  20. Article
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

6 authors.

Sabrina Mai NielsenThe Parker Institute, Copenhagen University Hospital, Frederiksberg & Bispebjerg, Frederiksberg, 2000, Denmark.
Simon TarpThe Parker Institute, Copenhagen University Hospital, Frederiksberg & Bispebjerg, Frederiksberg, 2000, Denmark.
Robin ChristensenThe Parker Institute, Copenhagen University Hospital, Frederiksberg & Bispebjerg, Frederiksberg, 2000, Denmark.
Henning BliddalClinical Research Unit, The Parker Institute, Copenhagen University Hospital, Frederiksberg & Bispebjerg, Frederiksberg, 2000, Denmark.
Louise KlokkerThe Parker Institute, Copenhagen University Hospital, Frederiksberg & Bispebjerg, Frederiksberg, 2000, Denmark.
Marius HenriksenPhysiotherapy and Biomechanics Research Unit, The Parker Institute, Copenhagen University Hospital, Frederiksberg & Bispebjerg, Frederiksberg, 2000, Denmark. marius.Henriksen@regionh.dk.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSpinal manipulative therapy (SMT) is a widely used manual treatment, but many reviews exist with conflicting conclusions about the safety of SMT. We performed an overview of reviews to elucidate and quantify the risk of serious adverse events (SAEs) associated with SMT.

methodsWe searched five electronic databases from inception to December 8, 2015. We included reviews on any type of studies, patients, and SMT technique. Our primary outcome was SAEs. Quality of the included reviews was assessed using a measurement tool to assess systematic reviews (AMSTAR). Since there were insufficient data for calculating incidence rates of SAEs, we used an alternative approach; the conclusions regarding safety of SMT were extracted for each review, and the communicated opinion were judged by two reviewers independently as safe, harmful, or neutral/unclear. Risk ratios (RRs) of a review communicating that SMT is safe and meeting the requirements for each AMSTAR item, were calculated.

resultsWe identified 283 eligible reviews, but only 118 provided data for synthesis. The most frequently described adverse events (AEs) were stroke, headache, and vertebral artery dissection. Fifty-four reviews (46%) expressed that SMT is safe, 15 (13%) expressed that SMT is harmful, and 49 reviews (42%) were neutral or unclear. Thirteen reviews reported incidence estimates for SAEs, roughly ranging from 1 in 20,000 to 1 in 250,000,000 manipulations. Low methodological quality was present, with a median of 4 of 11 AMSTAR items met (interquartile range, 3 to 6). Reviews meeting the requirements for each of the AMSTAR items (i.e. good internal validity) had a higher chance of expressing that SMT is safe.

conclusionsIt is currently not possible to provide an overall conclusion about the safety of SMT; however, the types of SAEs reported can indeed be significant, sustaining that some risk is present. High quality research and consistent reporting of AEs and SAEs are needed. SYSTEMATIC REVIEW REGISTRATION: PROSPERO CRD42015030068 .

Indexed as

HumansManipulation, SpinalRisk

Identifiers

PMID28340595
PMCPMC5366149

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

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.