Evidence map›Paper›PMID 33864566›Full record

ArticleInternational journal of computer assisted radiology and surgery2021

Implications of component size and calibration error on digital templating for total hip arthroplasty. A visual matrix from a simple mathematical model.

Christoph Kolja Boese, Tim Rolvien, Matthias Trost, Michael Frink, Jan Hubert, Frank Timo Beil, Christian Ries

Abstract read
In one paragraph

Article in International journal of computer assisted radiology and surgery, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–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

2 citing papers in PubMed.

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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.

Christoph Kolja BoeseDepartment of Orthopaedic and Trauma Surgery, University Hospital of Cologne, Cologne, Germany. k.boese@uke.de.
Tim RolvienDivision of Orthopaedics, Department of Trauma and Orthopaedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
Matthias TrostDepartment of Orthopaedics and Traumatology, St. Josef-Hospital, University of Bochum, Bochum, Germany.
Michael FrinkCenter of Orthopedic and Trauma Surgery, University of Giessen and Marburg, Marburg, Germany.
Jan HubertDivision of Orthopaedics, Department of Trauma and Orthopaedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
Frank Timo BeilDivision of Orthopaedics, Department of Trauma and Orthopaedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
Christian RiesDivision of Orthopaedics, Department of Trauma and Orthopaedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivePreoperative digital templating is a standard procedure in total hip arthroplasty. Deviations between template size and final implant size may result from inaccurate calibration, templating as well as intraoperative decisions. So far, the explicit effect of calibration errors on templating has not been addressed adequately. MATERIALS AND

methodsA mathematical simulation of calibration errors up to ± 24% was applied to the templating of acetabular cups (38 to 72 mm diameter). The effect of calibration errors on template component size as deviation from optimal size was calculated.

resultsThe relationship between calibration error and component size deviation is inverse and linear. Calibration errors have a more pronounced effect on larger component sizes. Calibration errors of 2-6% result in templating errors of up to two component sizes. Common errors of up to 12% may result in templating errors of 3-4 sizes for common implant sizes. A tabular matrix visualizes the effect.

conclusionCalibration errors play a significant role in component size selection during digital templating. Orthopedic surgeons should be aware of this effect and try to identify and address this source of error.

Indexed as

Hip ProsthesisModels, TheoreticalAcetabulumArthroplasty, Replacement, HipCalibrationHip JointHumansPreoperative CareReproducibility of ResultsArthroplastyCalibrationDigital templatingHipJoint replacement

Identifiers

PMID33864566
PMCPMC8166734

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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.