Evidence map›Paper›PMID 34985308›Full record

ArticleBone & joint open2022

Do acetabular parameters measured on 2D imaging correlate with CT, and can lateral centre-edge angle predict femoral head coverage?

Saif Salih, George Grammatopoulos, Sophia Burns, Margaret Hall-Craggs, Johan Witt

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Article in Bone & joint open, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing 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

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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

6 citing papers in PubMed.

  1. Article
  2. Evaluation of bony features associated with hip instability in hip dysplasia.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2025
    Article
  3. Article
  4. Article
  5. Article
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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.

Saif SalihDepartment of Trauma and Orthopaedics, Sheffield Teaching Hospitals, Sheffield, UK.ORCID 0000-0002-6877-6978
George GrammatopoulosOttawa Hospital, Ottawa, Canada.ORCID 0000-0002-7444-9498
Sophia BurnsUniversity College London Hospital, London, UK.
Margaret Hall-CraggsUniversity College London Hospital, London, UK.
Johan WittUniversity College London Hospital, London, UK.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimsThe lateral centre-edge angle (LCEA) is a plain radiological measure of superolateral cover of the femoral head. This study aims to establish the correlation between 2D radiological and 3D CT measurements of acetabular morphology, and to describe the relationship between LCEA and femoral head cover (FHC).

methodsThis retrospective study included 353 periacetabular osteotomies (PAOs) performed between January 2014 and December 2017. Overall, 97 hips in 75 patients had 3D analysis by Clinical Graphics, giving measurements for LCEA, acetabular index (AI), and FHC. Roentgenographical LCEA, AI, posterior wall index (PWI), and anterior wall index (AWI) were measured from supine AP pelvis radiographs. The correlation between CT and roentgenographical measurements was calculated. Sequential multiple linear regression was performed to determine the relationship between roentgenographical measurements and CT FHC.

resultsCT-measured LCEA and AI correlated strongly with roentgenographical LCEA (

conclusionCT and roentgenographical measurement of acetabular parameters are comparable. Currently, a radiological LCEA greater than 25° is considered normal. This study demonstrates that those with hip pain and normal radiological acetabular parameters may still have deficiencies in FHC. More sophisticated imaging techniques such as 3D CT should be considered for those with hip pain to identify deficiencies in FHC. Cite this article:

Indexed as

3D CTAcetabular dysplasiaacetabular index (AI)Computerised tomographyfemoral headFemoral head coveragehip painHip preservationhipslateral centre-edge angle (LCEA)linear regression modelpelvisPeri-acetabular osteotomyRadiographradiographsradiological measures

Identifiers

PMID34985308
PMCPMC9047077

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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.