Evidence map›Paper›PMID 34245150›Full record

ArticleNeurosurgery2021

Long-Term Outcome of Spinal Cord Stimulation in Complex Regional Pain Syndrome.

Tomas Hoikkanen, Mette Nissen, Tiina-Mari Ikäheimo, Henna-Kaisa Jyrkkänen, Jukka Huttunen, Mikael von Und Zu Fraunberg

Open access · hybridAbstract read
In one paragraph

Article in Neurosurgery, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
3.9field-weighted citation impact, top 5% of its field
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

13 citing papers in PubMed, 22 citations in OpenAlex.

  1. Article
  2. Long-term outcomes of spinal cord stimulation for refractory phantom limb pain.Frontiers in pain research (Lausanne, Switzerland) · 2026
    Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Review
  11. Article
  12. Machine Learning in Spinal Cord Stimulation for Chronic Pain.Operative neurosurgery (Hagerstown, Md.) · 2023
    Article
  13. Review
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 at 2 institutions in 2 countries.

Tomas HoikkanenNeurosurgery of KUH NeuroCenter, Kuopio University Hospital, Kuopio, Finland.
Mette NissenNeurosurgery of KUH NeuroCenter, Kuopio University Hospital, Kuopio, Finland.
Tiina-Mari IkäheimoNeurosurgery of KUH NeuroCenter, Kuopio University Hospital, Kuopio, Finland.
Henna-Kaisa JyrkkänenNeurosurgery of KUH NeuroCenter, Kuopio University Hospital, Kuopio, Finland.
Jukka HuttunenNeurosurgery of KUH NeuroCenter, Kuopio University Hospital, Kuopio, Finland.
Mikael von Und Zu FraunbergNeurosurgery of KUH NeuroCenter, Kuopio University Hospital, Kuopio, Finland.
Kuopio University Hospital · FIUniversity of Eastern Finland · FI

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSpinal cord stimulation (SCS) is an effective treatment in chronic neuropathic pain, but its efficacy in complex regional pain syndrome (CRPS) needs to be proven.

objectiveTo study the outcome of SCS in CRPS as measured by trial success, explantation rate, complications, and changes in opioid and neuropathic pain medication use over a 4-yr follow-up.

methodsWe retrospectively reviewed all medical records of 35 consecutive CRPS patients who underwent SCS trials at 2 hospitals during January 1998 to December 2016. The purchase data of opioids and neuropathic pain medication during January 1995 to March 2016 were retrieved from national registries.

resultsBased on a 1-wk trial, permanent SCS was implanted in 27 (77%) patients. During the median follow-up of 8 yr, 8 (30%) SCS devices were explanted, of which 7 were because of inefficient pain relief. Complications leading to revision occurred in 17 (63%) patients: 8 electrode migrations or stimulation to the wrong area, 1 deep infection, 9 hardware malfunctions, 2 pulse generator discomforts, and 2 SCS replacements. None of the 6 patients using strong opioids discontinued their use during the 2-yr follow-up. The mean opioid dose increased nonsignificantly both in patients with SCS in permanent use (53 ± 150 morphine milligram equivalents morphine milligram equivalent (MME)/day to 120 ± 240 MME/day) and in patients who had SCS explanted (27 ± 72 MME/day to 57 ± 66 MME/day).

conclusionDespite the fact that CRPS patients were not able to discontinue or reduce their strong opioid or neuropathic pain medication use, 70% continued to use their SCS device during a median 8-yr follow-up.

Indexed as

Chronic PainComplex Regional Pain SyndromesSpinal Cord StimulationHumansPain ManagementRetrospective StudiesSpinal CordTreatment OutcomeComplex regional pain syndromeNeuropathic pain medicationOpioidSpinal cord stimulation

Identifiers

PMID34245150
PMCPMC8440061
OpenAlexW3180126843

What OpenQuestion holds

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LicenceCC BY-NC-ND
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Registered trials

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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.