Evidence map›Paper›PMID 22653103›Full record

ArticleInternational orthopaedics2012

Measuring the Cobb angle with the iPhone in kyphoses: a reliability study.

Frederic Jacquot, Axelle Charpentier, Sofiane Khelifi, Daniel Gastambide, Regis Rigal, Alain Sautet

Open access · bronzeAbstract readEvaluation Study
In one paragraph

Article in International orthopaedics, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
2.9field-weighted citation impact, top 10% 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

12 citing papers in PubMed, 38 citations in OpenAlex.

  1. Trial
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  10. Smartphone use in neurosurgery? APP-solutely!Surgical neurology international · 2014
    Review
  11. Reply to letter to the editor: Smartphone apps for orthopaedic surgeons.Clinical orthopaedics and related research · 2013
    Article
  12. Article
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

6 authors at 1 institution in 1 country.

Frederic JacquotOrthopedics, Hôpital Saint Antoine, Paris, France. frederic.jacquot@sat.aphp.fr
Axelle Charpentier
Sofiane Khelifi
Daniel Gastambide
Regis Rigal
Alain Sautet
Hôpital Saint-Antoine · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeSmartphones have gained widespread use in the healthcare field to fulfill a variety of tasks. We developed a small iPhone application to take advantage of the built-in position sensor to measure angles in a variety of spinal deformities. We present a reliability study of this tool in measuring kyphotic angles.

methodsRadiographs taken from 20 different patients' charts were presented to a panel of six operators at two different times. Radiographs were measured with the protractor and the iPhone application and statistical analysis was applied to measure intraclass correlation coefficients between both measurement methods, and to measure intra- and interobserver reliability

resultsThe intraclass correlation coefficient calculated between methods (i.e. CobbMeter application on the iPhone versus standard method with the protractor) was 0.963 for all measures, indicating excellent correlation was obtained between the CobbMeter application and the standard method. The interobserver correlation coefficient was 0.965. The intraobserver ICC was 0.977, indicating excellent reproductibility of measurements at different times for all operators. The interobserver ICC between fellowship trained senior surgeons and general orthopaedic residents was 0.989. Consistently, the ICC for intraobserver and interobserver correlations was higher with the CobbMeter application than with the regular protractor method. This difference was not statistically significant.

conclusionMeasuring kyphotic angles with the iPhone application appears to be a valid procedure and is in no way inferior to the standard way of measuring the Cobb angle in kyphotic deformities.

Indexed as

Mathematical ComputingCell PhoneHumansKyphosisObserver VariationRadiographic Image EnhancementReproducibility of Results

Identifiers

PMID22653103
PMCPMC3535038
OpenAlexW2060132383

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.