Evidence map›Paper›PMID 30612171›Full record

ArticleInternational orthopaedics2019

A comparative study about the incidence of dislocation and peri-prosthetic fracture between dual mobility versus standard cups after primary total hip arthroplasty.

Elliot Sappey-Marinier, Anthony Viste, Yoann Blangero, Romain Desmarchelier, Michel-Henri Fessy

Abstract readComparative Study
PubMed Publisher
In one paragraph

Article in International orthopaedics, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 2 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

12 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Article
  5. Article
  6. Observational
  7. Review
  8. Article
  9. Article
  10. Article
  11. Risk factors for dislocation after bipolar hemiarthroplasty: a retrospective case-control study of patients with CT data.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2021
    Article
  12. Review
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.

Elliot Sappey-MarinierHospices Civils de Lyon, Centre Hospitalier Lyon Sud, Service de Chirurgie Orthopédique et Traumatologique, 165 Chemin du Grand Revoyet, 69495, Pierre Benite Cedex, France.
Anthony VisteHospices Civils de Lyon, Centre Hospitalier Lyon Sud, Service de Chirurgie Orthopédique et Traumatologique, 165 Chemin du Grand Revoyet, 69495, Pierre Benite Cedex, France. anthony.viste@chu-lyon.fr.ORCID 0000-0002-4068-2857
Yoann BlangeroEquipe biostatistique Santé - LBBE, Université Lyon 1, 162, av. Lacassagne, 69003, Lyon, France.
Romain DesmarchelierHospices Civils de Lyon, Centre Hospitalier Lyon Sud, Service de Chirurgie Orthopédique et Traumatologique, 165 Chemin du Grand Revoyet, 69495, Pierre Benite Cedex, France.
Michel-Henri FessyHospices Civils de Lyon, Centre Hospitalier Lyon Sud, Service de Chirurgie Orthopédique et Traumatologique, 165 Chemin du Grand Revoyet, 69495, Pierre Benite Cedex, France.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeDislocation and peri-prosthetic fracture (PPF) are major reasons for revision THA (total hip arthroplasty). The main advantage of dual mobility (DM) cups is to minimize the incidence of dislocation compared to single mobility (SM) cups. We hypothesized that the use of DM would lead to an increased risk of PPF because of its greater stability. In contrast, standard cups would be at higher risk of dislocation.

methodsA retrospective comparative study was performed in our institution including 126 revision THAs between January 2013 and December 2017. Collected data included gender, age, BMI, Parker score, ASA score, the etiology for primary THA, type of cup (SM or DM), cortical index, Noble index, and the stem fixation.

resultsOverall, 53 standard and 73 DM cups were included for study. In the dislocation group, 29 had standard cups (83%) and 6 had DM cups (17%). Dislocation was 12-fold higher in SM cups (p < 0.001). In the PPF group, 24 had standard cups (26%) and 67 had DM cups (74%). PFF was 12-fold higher for DM cups (p < 0.001). A higher Parker score and a higher cortical index had a protective effect on the risk of PPF (OR = 0.76 (p = 0.03), OR = 0.57 (p = 0.048)).

conclusionThe use of DM increased hip stability but led to a higher rate of PPF by load transfer on the femur. Further studies with larger cohort and follow-up are needed to confirm these findings and measure the incidence of these complications.

Indexed as

Arthroplasty, Replacement, HipAgedAged, 80 and overFemaleFracture DislocationHip DislocationHip ProsthesisHumansIncidenceMaleProsthesis DesignRange of Motion, ArticularRetrospective StudiesTreatment OutcomeDislocationDual mobilityPeri-prosthetic fractureStandard cupsTotal hip arthroplasty

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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.