Evidence map›Paper›PMID 34761094›Full record

ArticleArthroplasty today2021

Serum Metal Ions in Contemporary Monoblock and Modular Dual Mobility Articulations.

Alexander Greenberg, Allina Nocon, Ivan De Martino, David J Mayman, Thomas P Sculco, Peter K Sculco

Open access · goldAbstract read
In one paragraph

Article in Arthroplasty today, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 1 pooled it
2.3field-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.

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

10 citing papers in PubMed, 1 synthesis or guideline pooled it, 14 citations in OpenAlex.

  1. 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

6 authors at 1 institution in 2 countries.

Alexander GreenbergComplex Joint Reconstruction Center, Hospital for Special Surgery, New York, NY, USA.
Allina NoconComplex Joint Reconstruction Center, Hospital for Special Surgery, New York, NY, USA.
Ivan De MartinoComplex Joint Reconstruction Center, Hospital for Special Surgery, New York, NY, USA.
David J MaymanComplex Joint Reconstruction Center, Hospital for Special Surgery, New York, NY, USA.
Thomas P SculcoComplex Joint Reconstruction Center, Hospital for Special Surgery, New York, NY, USA.
Peter K SculcoComplex Joint Reconstruction Center, Hospital for Special Surgery, New York, NY, USA.
Hospital for Special Surgery · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundQuestions exist about the release of cobalt and chromium ions from dual mobility (DM) cups. Modular implants, with potential backside wear between the cobalt-chromium liner and titanium cup, are of particular concern. This study compares the metal ion profile of patients with contemporary monoblock and modular DM articulations from two commonly used designs.

methodsCobalt and chromium serum levels were measured one year after surgery in a prospective cohort of patients undergoing total hip arthroplasty with a DM construct. Ion levels were detected above 1 μg/L. Clinical and surgical data were correlated with the ion levels for analysis.

resultsOverall, 29% of the patients had levels above 1 μg/L of either ion. More patients with modular cups had detectable ions than patients with monoblock cups (39% vs 20%,

conclusionsWe found similar cobalt and chromium levels in patients with monoblock and modular DM cups. More patients in the modular group had detectable ions. Cobalt was more frequently detected in the monoblock group. These results suggest that both implants are performing well in the short term, but further follow-up is needed to determine whether the differences found are of clinical significance.

Indexed as

Backside wearChromiumCobaltDual mobilityMetal ions

Identifiers

PMID34761094
PMCPMC8567330
OpenAlexW3210129738

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.