Failure of Polyethylene Inlays in Cementless Total Hip Arthroplasty: A Retrieval Analysis
Joint Authors
Kretzer, Jan Philippe
Mueller, Ulrike
Lee, Christoph
Heisel, Christian
Thomsen, Marc
Bitsch, Rudi G.
Source
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-08-31
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
A retrieval analysis has been performed on 50 polyethylene inlays of cementless screw ring implants (Mecring, Mecron, Berlin, Germany) to investigate the failure mechanism of this specific open cup hip arthroplasty design that has shown a high clinical failure rate.
Design-specific damage modes like rim creep, collar fatigue, and backside wear were assessed.
Furthermore, the inlays were measured using a CMM to determine deformation.
In 90% backside wear was observed and collar fatigue occurred in 68% of the cases.
Rim creep was present in 38% of the polyethylene inlays.
In 90% of the cases the cup opening diameter was 32.1 mm or less and 46% had a diameter less than 32 mm.
It seems that creep and deformation of the polyethylene leads to a reduced diameter at the cup opening and consequently decreased clearance.
To avoid this type of failure, polyethylene inlays should be supported at the back by the cup to reduce the risk of ongoing creep deformation.
American Psychological Association (APA)
Mueller, Ulrike& Lee, Christoph& Heisel, Christian& Thomsen, Marc& Bitsch, Rudi G.& Kretzer, Jan Philippe. 2016. Failure of Polyethylene Inlays in Cementless Total Hip Arthroplasty: A Retrieval Analysis. BioMed Research International،Vol. 2016, no. 2016, pp.1-7.
https://search.emarefa.net/detail/BIM-1098145
Modern Language Association (MLA)
Mueller, Ulrike…[et al.]. Failure of Polyethylene Inlays in Cementless Total Hip Arthroplasty: A Retrieval Analysis. BioMed Research International No. 2016 (2016), pp.1-7.
https://search.emarefa.net/detail/BIM-1098145
American Medical Association (AMA)
Mueller, Ulrike& Lee, Christoph& Heisel, Christian& Thomsen, Marc& Bitsch, Rudi G.& Kretzer, Jan Philippe. Failure of Polyethylene Inlays in Cementless Total Hip Arthroplasty: A Retrieval Analysis. BioMed Research International. 2016. Vol. 2016, no. 2016, pp.1-7.
https://search.emarefa.net/detail/BIM-1098145
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1098145