Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2017 Jun;41(6):1101-1105.
doi: 10.1007/s00264-016-3314-0. Epub 2016 Oct 25.

Retrieval analysis of ceramic-coated metal-on-polyethylene total hip replacements

Harman Khatkar  1 , Harry Hothi  2 , Danielle de Villiers  1 , Christian Lausmann  3 , Daniel Kendoff  3 , Thorsten Gehrke  3 , John Skinner  1 , Alister Hart  1
Affiliations

Retrieval analysis of ceramic-coated metal-on-polyethylene total hip replacements

Harman Khatkar et al. Int Orthop. 2017 Jun.

Abstract

Purpose: Ceramic coatings have been used in metal-on-polyethylene (MOP) hips to reduce the risk of wear and also infection; the clinical efficacy of this remains unclear. This retrieval study sought to better understand the performance of coated bearing surfaces.

Methods: Forty-three coated MOP components were analysed post-retrieval for evidence of coating loss and gross polyethylene wear. Coating loss was graded using a visual semi-quantitative protocol. Evidence of gross polyethylene wear was determined by radiographic analysis and visual inspection of the retrieved implants.

Results: All components with gross polyethylene wear (n = 10) were revised due to a malfunctioning acetabular component; 35 % (n = 15) of implants exhibited visible coating loss and the incidence of polyethylene wear in samples with coating loss was 54 %, significantly (p = 0.02) elevated compared to samples with intact coatings (14 %).

Conclusions: In this study we found evidence of coating loss on metal femoral heads which was associated with increased wear of the corresponding polyethylene acetabular cups.

Keywords: Coating; Hip; Metal-on-polyethylene; Retrieval; Wear.

PubMed Disclaimer

References

    1. Biomed Res Int. 2015 ;2015 :485975 - PubMed
    1. Biomed Mater Eng. 1994;4(3):213-29 - PubMed
    1. J Orthop Res. 1993 Nov;11(6):865-73 - PubMed
    1. Hip Int. 2015 May-Jun;25(3):227-31 - PubMed
    1. Int Orthop. 2017 Apr;41(4):723-730 - PubMed

MeSH terms

LinkOut - more resources