Evidence map›Paper›PMID 34977664›Full record

ReviewArthroscopy, sports medicine, and rehabilitation2021

Abnormal Femoral Anteversion Is Associated With the Development of Hip Osteoarthritis: A Systematic Review and Meta-Analysis.

Emily A Parker, Alex M Meyer, Momin Nasir, Michael C Willey, Timothy S Brown, Robert W Westermann

Open access · goldAbstract readReview
In one paragraph

Review in Arthroscopy, sports medicine, and rehabilitation, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
3.3field-weighted citation impact, top 7% 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

21 citing papers in PubMed, 29 citations in OpenAlex.

  1. Femoral neck anteversion among five canid taxa.Anatomical record (Hoboken, N.J. : 2007) · 2026
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  7. Idiopathic Adolescent Miserable Malalignment.Journal of the Pediatric Orthopaedic Society of North America · 2026
    Review
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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

6 authors at 1 institution in 1 country.

Emily A ParkerDepartment of Orthopedics and Rehabilitation, University of Iowa Hospitals and Clinics, Iowa City, Iowa, U.S.A.
Alex M MeyerDepartment of Orthopedics and Rehabilitation, University of Iowa Hospitals and Clinics, Iowa City, Iowa, U.S.A.
Momin NasirDepartment of Orthopedics and Rehabilitation, University of Iowa Hospitals and Clinics, Iowa City, Iowa, U.S.A.
Michael C WilleyDepartment of Orthopedics and Rehabilitation, University of Iowa Hospitals and Clinics, Iowa City, Iowa, U.S.A.
Timothy S BrownDepartment of Orthopedics and Rehabilitation, University of Iowa Hospitals and Clinics, Iowa City, Iowa, U.S.A.
Robert W WestermannDepartment of Orthopedics and Rehabilitation, University of Iowa Hospitals and Clinics, Iowa City, Iowa, U.S.A.
University of Iowa Hospitals and Clinics · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo perform a systematic review and meta-analysis of literature and to evaluate the relationship between abnormal femoral version and the development of hip osteoarthritis (OA).

methodsA systematic review was performed following Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, evaluating Level I and II studies. Included studies had to provide granular femoral version (FV) information. The severity of OA was ranked on the Kellgren-Lawrence (KL) scale. Excel version 1808 (Microsoft, Redmond, WA) was used to perform a student

resultsOur review identified 19 qualifying studies-5 Level I and 14 Level II with 1,756 patients. Patients with FV above normal range (>14°) had greater KL scores than patients with normal range FV (mean ± standard deviation; 3.37 ± 1.44 vs 2.05 ± 1.72,

conclusionsThe present review suggests that elevated FV may be a risk factor for more severe hip OA with or without the presence of concurrent dysplasia of the hip. The relative amount of increased anteversion appears positively correlated with severity of OA. Although femoral retroversion may impact hip mechanics, in this review it does not appear to strongly correlate with the development of OA. LEVEL OF EVIDENCE: II: systematic review of Level I and II studies.

Identifiers

PMID34977664
PMCPMC8689222
OpenAlexW3197036036

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.