Evidence map›Paper›PMID 28101631›Full record

Trial reportEuropean journal of orthopaedic surgery & traumatology : orthopedie traumatologie2017

Lumbar and sacral pedicle screw placement using a template does not improve the midterm pain and disability outcome in comparison with free-hand method.

Matjaz Merc, Gregor Recnik, Zmago Krajnc

Abstract readComparative StudyRandomized Controlled Trial
PubMed Publisher
In one paragraph

Trial report in European journal of orthopaedic surgery & traumatology : orthopedie traumatologie, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 3 pooled it
2.2field-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

8 citing papers in PubMed, 3 syntheses or guidelines pooled it, 19 citations in OpenAlex.

  1. Pooled it
  2. Clinical applications of 3D printing in spine surgery: a systematic review.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 · 2025
    Pooled it
  3. Pooled it
  4. Article
  5. Review
  6. Article
  7. Article
  8. Comparison of Accuracy of Pedicle Screw Insertion Among 4 Guided Technologies in Spine Surgery.Medical science monitor : international medical journal of experimental and clinical research · 2017
    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

3 authors at 1 institution in 1 country.

Matjaz MercDepartment of Orthopaedic Surgery, UKC Maribor, Ljubljanska ulica 5, 2000, Maribor, Slovenia. matjaz.merc@gmail.com.
Gregor RecnikDepartment of Orthopaedic Surgery, UKC Maribor, Ljubljanska ulica 5, 2000, Maribor, Slovenia.
Zmago KrajncDepartment of Orthopaedic Surgery, UKC Maribor, Ljubljanska ulica 5, 2000, Maribor, Slovenia.
University Clinical Centre Maribor · SI

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe free-hand technique carries a higher risk of pedicle weakening and neurovascular injuries in comparison with pedicle screw placement using a drill guide. Due to this evidence and because of some variances in the surgical method, different outcome can be expected. The objective of the study was to evaluate the disability, the back and leg pain before and at least 3 years after the surgery between examined groups. MATERIALS AND

methodsEleven patients in drill guide and 13 in control group were randomly assigned for vertebral fusion in the lumbar and first sacral regions. Pre- and post-operative CT scans, Oswestry disability index (ODI) and visual analogue scale (VAS) for back and leg pain were taken. Post-operative evaluations of cortex perforation and statistical analysis between studied groups have been performed.

resultsSeventy-two screws were inserted in each group. All patients completed a 3-year follow-up. Comparing groups, there was no statistical significant difference in VAS and ODI before or after surgery. Cortex perforation incidence in drill guide group was 6 and in free-hand group 29 (p < 0.05). In each group, pain and disability were significantly lower as before the procedure.

conclusionsThe application of a drill guide template for pedicle screw placement is not more effective in reducing pain and disability after midterm follow-up in comparison with the free-hand technique. However, it reduces the cortex perforation incidence. Concerning this evidence, a drill guide is still an additional tool that could in the future potentially compete with other screw placement techniques.

Indexed as

Pedicle ScrewsAgedDisability EvaluationFemaleFollow-Up StudiesHumansLegLow Back PainLumbar VertebraeMaleMiddle AgedPain MeasurementProsthesis ImplantationSacrumSpinal FusionSpinal StenosisDrill guideFollow-upODIPerforationVAS

Identifiers

PMID28101631
OpenAlexW2577750907

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.