Evidence map›Paper›PMID 28790037›Full record

ArticleBone & joint research2017

A six-year retrospective analysis of cut-out risk predictors in cephalomedullary nailing for pertrochanteric fractures: Can the tip-apex distance (TAD) still be considered the best parameter?

G Caruso, M Bonomo, G Valpiani, G Salvatori, A Gildone, V Lorusso, L Massari

Open access · goldAbstract read
In one paragraph

Article in Bone & joint research, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 46 papers.

0numbers the graph read from it
0cells of the map it votes in
46citing papers in PubMed
5.0field-weighted citation impact, top 4% 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

46 citing papers in PubMed, 89 citations in OpenAlex.

  1. Article
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  5. Independent Risk Factors for Lag Screw Cut-Out: The Role of Open Reduction in Intertrochanteric Fracture Fixation With the Proximal Femoral Nail.Medical science monitor : international medical journal of experimental and clinical research · 2026
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  17. Accuracy of radiographic projections to guide cephalic screw position in pertrochanteric fracture: a cadaveric study.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2024
    Article
  18. [Clinical and radiographic factors associated with failure of the dynamic hip screw system].Revista medica del Instituto Mexicano del Seguro Social · 2023
    Observational
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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

7 authors at 2 institutions in 1 country.

G CarusoDepartment of Morphology, Surgery and Experimental Medicine, University of Ferrara, Via Borsari 47, 44121 Ferrara FE, Italy crsgtn@unife.it.
M BonomoDepartment of Morphology, Surgery and Experimental Medicine, University of Ferrara, Via Borsari 47, 44121 Ferrara FE, Italy.
G ValpianiResearch and Innovation Office, Azienda Ospedaliero-Universitaria di Ferrara Arcispedale Sant'Anna, Via Aldo Moro 8, 44124, Cona, Ferrara FE, Italy.
G SalvatoriDepartment of Morphology, Surgery and Experimental Medicine, University of Ferrara, Via Borsari 47, 44121 Ferrara FE, Italy.
A GildoneOrthopaedic and Traumatology Department, Azienda Ospedaliero-Universitaria di Ferrara Arcispedale Sant'Anna, Via Aldo Moro 8, 44124, Cona, Ferrara FE, Italy.
V LorussoOrthopaedic and Traumatology Department, Azienda Ospedaliero-Universitaria di Ferrara Arcispedale Sant'Anna, Via Aldo Moro 8, 44124, Cona, Ferrara FE, Italy.
L MassariDepartment of Morphology, Surgery and Experimental Medicine, University of Ferrara, Via Borsari 47, 44121 Ferrara FE, Italy.
University of Ferrara · ITArcispedale Sant'Anna · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesIntramedullary fixation is considered the most stable treatment for pertrochanteric fractures of the proximal femur and cut-out is one of the most frequent mechanical complications. In order to determine the role of clinical variables and radiological parameters in predicting the risk of this complication, we analysed the data pertaining to a group of patients recruited over the course of six years.

methodsA total of 571 patients were included in this study, which analysed the incidence of cut-out in relation to several clinical variables: age; gender; the AO Foundation and Orthopaedic Trauma Association classification system (AO/OTA); type of nail; cervical-diaphyseal angle; surgical wait times; anti-osteoporotic medication; complete post-operative weight bearing; and radiological parameters (namely the lag-screw position with respect to the femoral head, the Cleveland system, the tip-apex distance (TAD), and the calcar-referenced tip-apex distance (CalTAD)).

resultsThe incidence of cut-out across the sample was 5.6%, with a higher incidence in female patients. A significantly higher risk of this complication was correlated with lag-screw tip positioning in the upper part of the femoral head in the anteroposterior radiological view, posterior in the latero-lateral radiological view, and in the Cleveland peripheral zones. The tip-apex distance and the calcar-referenced tip-apex distance were found to be highly significant predictors of the risk of cut-out at cut-offs of 30.7 mm and 37.3 mm, respectively, but the former appeared more reliable than the latter in predicting the occurrence of this complication.

conclusionThe tip-apex distance remains the most accurate predictor of cut-out, which is significantly greater above a cut-off of 30.7 mm.

Indexed as

Calcar-referenced tip-apex distanceCut-outPertrochanteric fracturesTip-apex distance

Identifiers

PMID28790037
PMCPMC5579311
OpenAlexW2744915315

What OpenQuestion holds

Textmetadata
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Registered trials

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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.