Evidence map›Paper›PMID 34296031›Full record

ArticleJournal of spine surgery (Hong Kong)2021

Intraoperative disc level marking with needle: a technical note and prospective study on 30 patients.

Marc Prod'homme, Didier Grasset, Mélissa Lecocq, Duccio Boscherini

Open access · diamondAbstract read
In one paragraph

Article in Journal of spine surgery (Hong Kong), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
0.3field-weighted citation impact, top 45% 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

3 citing papers in PubMed, 2 citations in OpenAlex.

  1. Accuracy in spinal level determination, including transitional vertebrae: an ASReview supported 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 · 2026
    Review
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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

4 authors at 1 institution in 1 country.

Marc Prod'hommeClinic La Source, Neuro Orthopedic Center, Lausanne, Switzerland.
Didier GrassetClinic La Source, Neuro Orthopedic Center, Lausanne, Switzerland.
Mélissa LecocqClinic La Source, Neuro Orthopedic Center, Lausanne, Switzerland.
Duccio BoscheriniClinic La Source, Neuro Orthopedic Center, Lausanne, Switzerland.
Clinique de La Source · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundWrong-level surgery is a rare but unresolved issue in spine surgery. Some proposed protocols with high success rates, but it remains a risk with potential complications for the patient. Surgical navigation offers more accurate surgery, without additional irradiation related to the imaging device, in order to optimize the surgical guidance.

methodsWe describe our institutional technique with a needle placed under fluoroscopy at 3 cm from the incision line at the disc level to be operated, in order to guide the surgical approach; and we report a prospective evaluation of all patients during a six-month period operated by microdiscectomy for symptomatic lumbar discus hernia, whose hernia level was landmarked with this technique. We collected demographic, clinical-such as visual analog scale (VAS) of pain and Oswestry disability index (ODI) scores-operative and irradiation data for effective dose calculation.

resultsThirty patients were included in the study. No wrong-level procedure was performed. Mean time for landmarking was 2.22 [1-5] minutes. Average operative time was 54.5 [30-150] minutes. The effective dose related to the imaging device use was 0.032 (0.007-0.092) mSv. The effective dose was also correlated to body mass index and disc level (P=0.05). The operative duration, complication rate and postoperative VAS and ODI scores were similar to the current literature.

conclusionsWe advocate the use of percutaneous needle guidance, avoiding wrong-level microdiscectomy and helping the surgeon as a "navigation-like" device with minimal additional irradiation for the patient.

Indexed as

microdiscectomyneedle guidanceradiation exposurespine surgeryWrong-level

Identifiers

PMID34296031
PMCPMC8261559
OpenAlexW3157583372

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.