Evidence map›Paper›PMID 30069532›Full record

ArticleJournal of spine surgery (Hong Kong)2018

A review of 571 radiographs on Tuffier's inter-cristal line and its' application in lumbar spinal surgery.

Ahmed Chowdhury, Himanshu Sharma

Open access · hybridAbstract read
In one paragraph

Article in Journal of spine surgery (Hong Kong), 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
0.3field-weighted citation impact, top 39% 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

1 citing paper in PubMed, 5 citations in OpenAlex.

  1. 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

2 authors at 1 institution in 1 country.

Ahmed ChowdhuryPlymouth Peninsula Medical School, Tamar Science Park, Research Way, Plymouth Devon, UK.
Himanshu SharmaSouthwest Neurosurgery Centre, Derriford Hospital Plymouth, Plymouth, UK.
Derriford Hospital · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTuffier's line (TL) is an anatomical landmark used to identify the L4/5 interspace by palpating inter-cristal level in lumbar spinal surgery. The routine use of pre-operative pre-incision radiographs for level check by spinal surgeons is variable due to reliance on this palpation. The anatomical violation of neighbouring normal levels in microscope assisted lumbar surgery is unknown. The aim of this study was to evaluate the effects of patient-related demographic factors and radiographic parameters on TL in a cohort of patients undergoing lumbar spinal procedures.

methodsWe retrospectively analysed 195 patients (571 radiographs) from a spinal database undergoing lumbar spinal procedures included nerve root injections, decompressions, micro-discectomies and instrumented fusions under a single surgeon. Radiographs were analysed with regard to age, gender, radiographic views (AP & lateral) and weight-bearing (wb) & non-weight bearing (non-wb).

resultsThe mean age was 59.8 years (range, 24-88 years). The most common level of TL was L4 vertebra (40% <60; 44% >60 years). The most common level in females was L5, while in males L4 vertebra. In 186 radiographs, 68% displayed a difference of at least one vertebral level on AP versus lateral planes. In 11 patients, there was at least 1 level vertebral difference between weight bearing & non-weight bearing radiographs.

conclusionsTL can be affected by age, gender, radiographic views and weight bearing status variably. We recommend employing pre-incision radiographs in all microscope assisted lumbar spinal procedures to eliminate the clinical variations in inter-cristal line and thereby avoiding anatomical violation of neighbouring normal levels in microscope-assisted lumbar surgery. We highlight such variations in inter-cristal line should be given enough consideration in order to avoid a wrong level surgery. Palpatory method for level check without performing pre-incision lateral X-ray should be discouraged.

Indexed as

genderlumbar surgeryTuffier’s line (TL)X-ray

Identifiers

PMID30069532
PMCPMC6046340
OpenAlexW2809767769

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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.