Evidence map›Paper›PMID 27957636›Full record

ArticleEuropean radiology2017

Bony morphology of the hip in professional ballet dancers compared to athletes.

Susan Mayes, April-Rose Ferris, Peter Smith, Andrew Garnham, Jill Cook

Abstract readComparative Study
PubMed Publisher
In one paragraph

Article in European radiology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 1 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

8 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Understanding hip pathology in ballet dancers.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2022
    Pooled it
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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

5 authors.

Susan MayesThe Australian Ballet, 2 Kavanagh St Southbank, Victoria, 3006, Australia. suem@australianballet.com.au.
April-Rose FerrisDepartment of Physiotherapy School of Primary Health Care Faculty of Medicine, Nursing and Health Sciences Monash University - Peninsula Campus, PO Box 527, Frankston, Victoria, 3199, Australia.
Peter SmithMIA East Melbourne Radiology, Level 1, 141 Grey Street, East Melbourne, VIC, 3002, Australia.
Andrew GarnhamSchool of Exercise and Nutrition Sciences, Deakin University, 221 Burwood Highway, Burwood, Victoria, 3125, Australia.
Jill CookSchool of Allied Health, La Trobe University, Bundoora, Victoria, 3086, Australia.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesTo compare hip bony morphology between ballet dancers and a sporting control group and to determine the relationship with hip pain.

methodsThirty-three professional ballet dancers and 33 age- and sex-matched athletes completed questionnaires, including the Copenhagen Hip and Groin Outcome Score (HAGOS), and underwent clinical testing and 3.0-T magnetic resonance imaging to measure acetabular coverage with lateral centre edge angles, femoral head-neck junction concavity with alpha angles at anterior and superior positions, femoral neck-shaft angles, and acetabular version angles.

resultsBony morphological measures fell within normal ranges. Dancers had higher neck-shaft angles (dancers 134.6 ± 4.6°/athletes130.8 ± 4.7°, p = 0.002), lower acetabular version angles (13.5 ± 4.7°/17.1 ± 4.7°, p = 0.003), lower superior alpha angles (38.9 ± 6.9°/46.7 ± 10.6°, p < 0.001), similar anterior alpha angles (43.6 ± 8.1/46 ± 7°, p = 0.2), and similar lateral centre edge angles (28.8 ± 4.6°/30.8 ± 4.5°, p = 0.07) compared to athletes. Abnormal morphology was detected in dancers: 3% acetabular dysplasia (athletes 0), 15% borderline dysplasia (6%), 24% cam morphology (33%), 24% coxa valga (6%), and 21% acetabular retroversion (18%). The HAGOS pain scores correlated moderately with acetabular version (r = -0.43, p = 0.02) in dancers, with no other correlation between pain and morphological parameters in either group.

conclusionsProfessional ballet dancers have hip bony morphology that differentiates them from athletes. Hip pain correlated poorly with bony morphology. KEY POINTS: • Ballet dancers have hip bony morphology that may allow extreme hip motion. • Morphological parameter means fell within normal reference intervals in dancers. • Bony morphology correlates poorly with hip pain. • The risk of hip injury due to abnormal morphology requires prospective studies.

Indexed as

AthletesDancingAdolescentAdultArthralgiaDiagnosis, DifferentialFemaleFemoracetabular ImpingementHumansMagnetic Resonance ImagingMaleOccupational DiseasesOccupational ExposurePelvic BonesProspective StudiesYoung AdultAcetabular dysplasiaAcetabular versionFemoroacetabular impingementHip painNeck-shaft angle

Identifiers

PMID27957636

What OpenQuestion holds

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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.