Evidence map›Paper›PMID 25631687›Full record

Trial reportInternational orthopaedics2015

Vitamin-E diffused highly cross-linked polyethylene liner compared to standard liners in total hip arthroplasty. A randomized, controlled trial.

Mats Salemyr, Olle Muren, Torbjörn Ahl, Henrik Bodén, Ghazi Chammout, André Stark, Olof Sköldenberg

Abstract readComparative StudyRandomized Controlled Trial
PubMed Publisher
In one paragraph

Trial report in International orthopaedics, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 3 pooled it
6.8field-weighted citation impact, top 3% 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

25 citing papers in PubMed, 3 syntheses or guidelines pooled it, 57 citations in OpenAlex.

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  15. Biopolymeric Coatings for Local Release of Therapeutics from Biomedical Implants.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2023
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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

7 authors at 1 institution in 1 country.

Mats SalemyrDivision of Orthopaedics, Department of Clinical Sciences at Danderyd Hospital, Karolinska Institutet, Stockholm, Sweden.
Olle Muren
Torbjörn Ahl
Henrik Bodén
Ghazi Chammout
André Stark
Olof Sköldenberg
Karolinska Institutet · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeWe hypothesized that a vitamin E-treated polyethylene articulating liner had lower femoral head penetration than a conventional liner.

methodsFifty-one patients with primary hip osteoarthritis were randomized to an uncemented cup with either vitamin E-treated highly cross-linked polyethylene (HXLPE) (vitamin-e group, n = 25) or a standard HXLPE liner (control group, n = 26) and followed for two years after surgery. The outcome variable was polyethylene (PE) linear head penetration, measured with radiostereometry (RSA).

resultsThe head penetration in x- (medial/lateral) and y- (vertical) axes was significantly lower for the vitamin E-treated liner up to two years with a mean difference between the groups of 0.10 mm (95 % CI 0.04-0.18) and 0.08 mm (95 % CI 0.01-0.15), respectively. The initial total penetration was lower for the vitamin-E group but did not reach statistical significance at two years with a mean difference between the groups of 0.07 mm (95 % CI -0.001 to 0.15, p = 0.09). We found no differences in clinical outcome between the groups.

conclusionsIn this prospective, randomized, controlled trial on a new vitamin-E diffused HXLPE liner we found, compared to a conventional HXLPE liner, lower initial head penetration and lower superior and medial wear. A longer follow-up than two years is necessary to demonstrate lower overall head penetration in vitamin-E liners compared to contemporary highly cross-linked PE.

Indexed as

Arthroplasty, Replacement, HipHip ProsthesisAdultAgedAntioxidantsFemaleFemur HeadHumansMaleMiddle AgedOsteoarthritis, HipPolyethyleneProspective StudiesProsthesis FailureRadiostereometric AnalysisVitamin EAntioxidantsPolyethyleneVitamin E

Identifiers

PMID25631687
OpenAlexW2062747613

What OpenQuestion holds

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Read underepoch 390

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.