Evidence map›Paper›PMID 32493446›Full record

ArticleJournal of orthopaedic surgery and research2020

Study of the tribological properties of surface structures using ultrashort laser pulses to reduce wear in endoprosthetics.

Lea Theresa Backes, Paul Oldorf, Rigo Peters, Robert Wendlandt, Georg Schnell, Arndt-Peter Schulz

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Journal of orthopaedic surgery and research, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–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

1 citing paper in PubMed.

  1. Article
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.

Lea Theresa BackesDepartment of Orthopaedics and Traumatology/Laboratory for Biomechatronics, University Lübeck, Ratzeburger Allee 160, 23538, Lübeck, Germany. leabackes@aol.com.ORCID http://orcid.org/0000-0002-1970-162X
Paul OldorfSLV (Schweißtechnische Lehr- und Versuchsanstalt) Mecklenburg-Vorpommern GmbH (Gesellschaft mit beschränkter Haftung), Alter Hafen Süd 4, 18069, Rostock, Germany.
Rigo PetersSLV (Schweißtechnische Lehr- und Versuchsanstalt) Mecklenburg-Vorpommern GmbH (Gesellschaft mit beschränkter Haftung), Alter Hafen Süd 4, 18069, Rostock, Germany.
Robert WendlandtDepartment of Orthopaedics and Traumatology/Laboratory for Biomechatronics, University Lübeck, Ratzeburger Allee 160, 23538, Lübeck, Germany.
Georg SchnellDepartment of Microfluidics, Faculty of Mechanical Engineering and Marine Technology, University of Rostock, Justus-von-Liebig Weg 6, 18059, Rostock, Germany.
Arndt-Peter SchulzDepartment of Orthopaedics and Traumatology/Laboratory for Biomechatronics, University Lübeck, Ratzeburger Allee 160, 23538, Lübeck, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundLoosening of prostheses and functional disorders represent a far-reaching problem in the clinic, and the long-term outcomes are essentially determined by wear. Despite all advances, up to 10% of prostheses still fail after 10 years. In particular, more active patients show increased revision rates.

methodsThe objective of this thesis is to examine whether the applied microstructures of the articulating surfaces can lead to a reduction in abrasion. Three different structural geometries (dimples, offset lines, grid lines) were defined. In an experimental test setup according to DIN ISO 6474 (Deutsches Institut für Normung, International Organization for Standardization), a tribological test of metal and ceramic pairings was performed using two-dimensional ring-on-disc (RoD) tests.

resultsIn both material groups, the structuring had a positive effect on the wear behaviour. In the ceramic group, an abrasion reduction of 22.6% was achieved. However, it is important to take into account the limited informative value due to the hardness of the material. Two of the three Cobalt-Chrome-Molybdenum (CoCrMo) structure geometries (grids, offset lines) also showed a significant reduction in abrasion compared to the reference group, with a maximum wear reduction of 55.5%.

conclusionBy reducing abrasion, surface structuring could be used to extend the life of prostheses and minimise the number of revisions.

Indexed as

Hip ProsthesisMaterials TestingProsthesis DesignProsthesis FailureSurface PropertiesCeramicsEquipment Failure AnalysisHumansLasersMetalsModels, BiologicalMetalsAseptic looseningEndoprostheticsMicrostructuresRing-on-disc testSurface structuresUltrashort pulse laserWear reduction

Identifiers

PMID32493446
PMCPMC7268664

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.