Evidence map›Paper›PMID 36048284›Full record

ArticleJournal of orthopaedics and traumatology : official journal of the Italian Society of Orthopaedics and Traumatology2022

Intraoperative CT-guided navigation versus fluoroscopy for percutaneous pedicle screw placement in 192 patients: a comparative analysis.

Giuseppe La Rocca, Edoardo Mazzucchi, Fabrizio Pignotti, Luigi Aurelio Nasto, Gianluca Galieri, Alessandro Olivi, Vincenzo De Santis, Pierluigi Rinaldi, Enrico Pola, Giovanni Sabatino

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Article in Journal of orthopaedics and traumatology : official journal of the Italian Society of Orthopaedics and Traumatology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 2 pooled it
–field-weighted citation impact
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

25 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Digital Twins and Health Care: an Umbrella Review.Journal of medical systems · 2025
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  4. Identification of a saddle point (SP) for safe sacral segment channel planning via data analysis and rapid physical prototyping.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
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4 · The record

Corrections and comments

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5 · Who and what money

Authors and funding

10 authors.

Giuseppe La Rocca *Department of Neurosurgery, Mater Olbia Hospital, Olbia, Italy.
Edoardo Mazzucchi *Department of Neurosurgery, Mater Olbia Hospital, Olbia, Italy.
Fabrizio PignottiDepartment of Neurosurgery, Mater Olbia Hospital, Olbia, Italy.
Luigi Aurelio NastoUnit of Orthopedics and Spine Surgery, Primo Policlinico Di Napoli, Università Della Campania Luigi Vanvitelli, Piazza Luigi Miraglia, 2, 80138, Naples, Italy.
Gianluca GalieriDepartment of Neurosurgery, Mater Olbia Hospital, Olbia, Italy.
Alessandro OliviDepartment of Neurosurgery, Mater Olbia Hospital, Olbia, Italy.
Vincenzo De SantisInstitute of Orthopedics, IRCCS Fondazione Policlinico Universitario Agostino Gemelli, Catholic University of Rome, Rome, Italy.
Pierluigi RinaldiUnit of Radiology, Mater Olbia Hospital, Olbia, Italy.
Enrico PolaUnit of Orthopedics and Spine Surgery, Primo Policlinico Di Napoli, Università Della Campania Luigi Vanvitelli, Piazza Luigi Miraglia, 2, 80138, Naples, Italy. enricopola@hotmail.com.
Giovanni SabatinoDepartment of Neurosurgery, Mater Olbia Hospital, Olbia, Italy.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPercutaneous pedicle screw (PPS) placement is a key step in several minimally invasive spinal surgery (MISS) procedures. Traditional technique for PPS makes use of C-arm fluoroscopy assistance (FA). More recently, newer intraoperative imaging techniques have been developed for PPS, including CT-guided navigation (CTNav). The aim of this study was to compare FA and CTNav techniques for PPS with regard to accuracy, complications, and radiation dosage. MATERIALS AND

methodsA total of 192 patients with degenerative lumbar spondylolisthesis and canal stenosis who underwent MISS posterior fusion ± interbody fusion through transforaminal approach (TLIF) were retrospectively reviewed. Pedicle screws were placed percutaneously using either standard C-arm fluoroscopy guidance (FA group) or CT navigation (CTNav group). Intraoperative effective dose (ED, mSv) was measured. Screw placement accuracy was assessed postoperatively on a CT scan using Gertzbein and Robbins classification (grades A-E). Oswestry disability index (ODI) and visual analog scale (VAS) scores were compared in both groups before and after surgery.

resultsA total of 101 and 91 procedures were performed with FA (FA group) and CTNav approach (CTNav group), respectively. Median age was 61 years in both groups, and the most commonly treated level was L4-L5. Median ED received from patients was 1.504 mSv (0.494-4.406) in FA technique and 21.130 mSv (10.840-30.390) in CTNav approach (p < 0.001). Percentage of grade A and B screws was significantly higher for the CTNav group (96.4% versus 92%, p < 0.001), whereas there were 16 grade E screws in the FA group and 0 grade E screws in the CTNav group (p < 0.001). A total of seven and five complications were reported in the FA and CTNav group, respectively (p = 0.771).

conclusionsCTNav technique increases accuracy of pedicle screw placement compared with FA technique without affecting operative time. Nevertheless, no significant difference was noted in terms of reoperation rate due to screw malpositioning between CTNav and FA techniques. Radiation exposure of patients was significantly higher with CTNav technique. LEVEL OF EVIDENCE: Level 3.

Indexed as

Pedicle ScrewsSpinal FusionSurgery, Computer-AssistedFluoroscopyHumansLumbar VertebraeMiddle AgedRetrospective StudiesTomography, X-Ray ComputedCT navigationDegenerative spondylolisthesisLow-back-pain surgeryMinimally invasive spine surgeryPercutaneous pedicle screwsRadiation exposure

Identifiers

PMID36048284
PMCPMC9437178

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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.