Evidence map›Paper›PMID 32556628›Full record

SynthesisEuropean spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society2021

The impact of odontoid screw fixation techniques on screw-related complications and fusion rates: a systematic review and meta-analysis.

Ivan Lvov, Andrey Grin, Aleksandr Talypov, Ivan Godkov, Anton Kordonskiy, Ulugbek Khushnazarov, Vladimir Smirnov, Vladimir Krylov

Abstract readMeta-AnalysisSystematic Review
PubMed Publisher
In one paragraph

Synthesis in European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
2.0field-weighted citation impact, top 13% 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

9 citing papers in PubMed, 21 citations in OpenAlex.

  1. Article
  2. Article
  3. [Treatment of geriatric odontoid fractures].Unfallchirurgie (Heidelberg, Germany) · 2025
    Article
  4. Review
  5. Article
  6. Review
  7. Article
  8. Article
  9. 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

8 authors at 2 institutions in 1 country.

Ivan LvovDepartment of Neurosurgery, Sklifosovsky Research Institute for Emergency Medicine, B. Suharevskaya Pl. 3, Moscow, Russia, 107945. dr.speleolog@gmail.com.ORCID 0000-0003-1718-0792
Andrey GrinDepartment of Neurosurgery, Sklifosovsky Research Institute for Emergency Medicine, B. Suharevskaya Pl. 3, Moscow, Russia, 107945.
Aleksandr TalypovDepartment of Neurosurgery, Sklifosovsky Research Institute for Emergency Medicine, B. Suharevskaya Pl. 3, Moscow, Russia, 107945.
Ivan GodkovDepartment of Neurosurgery, Sklifosovsky Research Institute for Emergency Medicine, B. Suharevskaya Pl. 3, Moscow, Russia, 107945.
Anton KordonskiyDepartment of Neurosurgery, Sklifosovsky Research Institute for Emergency Medicine, B. Suharevskaya Pl. 3, Moscow, Russia, 107945.
Ulugbek KhushnazarovDepartment of Neurosurgery, Sklifosovsky Research Institute for Emergency Medicine, B. Suharevskaya Pl. 3, Moscow, Russia, 107945.
Vladimir SmirnovDepartment of Neurosurgery, Sklifosovsky Research Institute for Emergency Medicine, B. Suharevskaya Pl. 3, Moscow, Russia, 107945.
Vladimir KrylovDepartment of Neurosurgery, Sklifosovsky Research Institute for Emergency Medicine, B. Suharevskaya Pl. 3, Moscow, Russia, 107945.
Research Institute of Emergency Care · RUMoscow State University of Medicine and Dentistry · RU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThe primary goal of this study was to conduct a systematic review and meta-analysis of articles focused on odontoid screw fixation (OSF) and screw-related complications or non-union rates.

methodsWe conducted a systematic review of the PubMed and Crossref databases between January 1982 and December 2019. Inclusion criteria comprised detailed descriptions of the surgical technique and screw-related complications (screw cut-out, loosening, breakage, malposition) or fusion rates.

resultsThe initial selection consisted of 683 abstracts. A total of 150 full texts were chosen for detailed study, and 83 articles were included in the analysis. The point estimates for screw-related complications were as follows: 1. screw malposition frequency-4.8%; 2. screw cut-out rate-5.0%; 3. screw loosening/pull-out-3.8%; and 4. screw fracture rate-3.1%. The point estimate for the non-union rate was 9.7%. Statistical analysis of the screw-related complications rate based on surgical technique details was also performed

conclusionsDouble-screw OSF performance in elder patients resulted in a higher risk of post-operative screw cut-out. In other cases, the development of screw-related complications did not depend on the method of intraoperative head fixation, selection of the implant entry point for OSF, type of the used screws, or cannulated instruments application. The outcomes of single-screw fixation through the anterior lip of the C2 vertebra were comparable to other techniques of OSF. Further, statistically reliable studies should be carried out to identify the optimal technique of OSF.

Indexed as

Fractures, BoneOdontoid ProcessSpinal FracturesAgedBone ScrewsFracture Fixation, InternalHumansC2 fusionOdontoid fractureOdontoid screw fixationScrew-related complications

Identifiers

PMID32556628
OpenAlexW3035805588

What OpenQuestion holds

Textmetadata
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.