Evidence map›Paper›PMID 32746668›Full record

ArticleActa orthopaedica2020

Study protocol: Effectiveness of dual-mobility cups compared with uni-polar cups for preventing dislocation after primary total hip arthroplasty in elderly patients - design of a randomized controlled trial nested in the Dutch Arthroplasty Registry.

Loes W A H Van Beers, Bart C H Van Der Wal, Tess Glastra Van Loon, Dirk Jan F Moojen, Marieke F Van Wier, Amanda D Klaassen, Nienke W Willigenburg, Rudolf W Poolman, Collaborator group

Registry-linked trialOpen access · goldAbstract readClinical Trial Protocol
PubMed Full text at PMC Publisher
In one paragraph

Article in Acta orthopaedica, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04031820 (Effectiveness of Dual-mobility Cups for Preventing Dislocation After Primary Total Hip Arthroplasty by a Posterolateral Approach and Their Cost-effectiveness Compared to Unipolar Cups in Elderly Patients.), which is not on this map. Cited by 7 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed, 2 pooled it
2.5field-weighted citation impact, top 11% 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.

NCT04031820 narecruitingnot on this map

Effectiveness of Dual-mobility Cups for Preventing Dislocation After Primary Total Hip Arthroplasty by a Posterolateral Approach and Their Cost-effectiveness Compared to Unipolar Cups in Elderly Patients.

TypeinterventionalSponsorJointResearchRan2019 to 2027Enrolled1,100ConditionsTotal Hip Arthroplasty, Osteoarthritis, HipArmsUnipolar cup, Dual mobility cup
3 · Its place in the literature

Who cites it

7 citing papers in PubMed, 2 syntheses or guidelines pooled it, 14 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Review
  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

9 authors at 2 institutions in 1 country.

Loes W A H Van BeersOLVG, Amsterdam.
Bart C H Van Der WalUniversity Medical Center Utrecht, Utrecht.
Tess Glastra Van LoonOLVG, Amsterdam.
Dirk Jan F MoojenOLVG, Amsterdam.
Marieke F Van WierOLVG, Amsterdam.
Amanda D KlaassenOLVG, Amsterdam.
Nienke W WilligenburgOLVG, Amsterdam.
Rudolf W PoolmanOLVG, Amsterdam.
Collaborator group
OLVG · NLUniversity Medical Center Utrecht · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background and purpose - Dislocation is the leading reason for early revision surgery after total hip arthroplasty (THA). The dual-mobility (DM) cup was developed to provide more stability and mechanically reduce the risk of dislocation. Despite the increased use of DM cups, high-quality evidence of their (cost-)effectiveness is lacking. The primary objective of this randomized controlled trial (RCT) is to investigate whether there is a difference in the number of hip dislocations following primary THA, using the posterolateral approach, with a DM cup compared with a unipolar (UP) cup in elderly patients 1 year after surgery. Secondary outcomes include the number of revision surgeries, patient-reported outcome measures (PROMs), and cost-effectiveness.Methods and analysis - This is a prospective multicenter nationwide, single-blinded RCT nested in the Dutch Arthroplasty Registry. Patients ≥ 70 years old, undergoing elective primary THA using the posterolateral approach, will be eligible. After written informed consent, 1,100 participants will be randomly allocated to the intervention or control group. The intervention group receives a THA with a DM cup and the control group a THA with a UP cup. PROMs are collected preoperatively, and 3 months, 1 and 2 years postoperatively. Primary outcome is the difference in number of dislocations between the UP and DM cup within 1 year, reported in the registry (revisions), or by the patients (closed or open reduction). Data will be analyzed using multilevel models as appropriate for each outcome (linear/logistic/survival). An economic evaluation will be performed from the healthcare and societal perspective, for dislocation and quality adjusted life years (QALYs).Trial registration - This RCT is registered at www.clinicaltrials.gov with identification number NCT04031820.

Indexed as

Arthroplasty, Replacement, HipHip ProsthesisAgedHip DislocationHip FracturesHumansNetherlandsPostoperative ComplicationsProspective StudiesProsthesis DesignRandomized Controlled Trials as TopicRegistriesSingle-Blind Method

Identifiers

PMID32746668
PMCPMC8023924
OpenAlexW3047128380

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

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.