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Comparison of flanged and unflanged acetabular cup design.

Orskov, Mette; Abdulghani, Saba; McCarthy, Ian; Søballe, Kjeld and Flivik, Gunnar LU (2010) In Acta Orthopaedica 81(5). p.556-562
Abstract
Background and purpose Adequate depth of cement penetration and cement mantle thickness is important for the durability of cemented cups. A flanged cup, as opposed to unflanged, has been suggested to give a more uniform cement mantle and superior cement pressurization, thus improving the depth of cement penetration. This hypothesis was tested experimentally. Materials and methods The same cup design with and without flange (both without cement spacers) was investigated regarding intraacetabular pressure, cement mantle thickness, and depth of cement penetration. With machine control, the cups were inserted into open-pore ceramic acetabular models (10 flanged, 10 unflanged) and into paired cadaver acetabuli (10 flanged, 10 unflanged) with... (More)
Background and purpose Adequate depth of cement penetration and cement mantle thickness is important for the durability of cemented cups. A flanged cup, as opposed to unflanged, has been suggested to give a more uniform cement mantle and superior cement pressurization, thus improving the depth of cement penetration. This hypothesis was tested experimentally. Materials and methods The same cup design with and without flange (both without cement spacers) was investigated regarding intraacetabular pressure, cement mantle thickness, and depth of cement penetration. With machine control, the cups were inserted into open-pore ceramic acetabular models (10 flanged, 10 unflanged) and into paired cadaver acetabuli (10 flanged, 10 unflanged) with prior pressurization of the cement. Results No differences in intraacetabular pressures during cup insertion were found, but unflanged cups tended to migrate more towards the acetabular pole. Flanged cups resulted in thicker cement mantles because of less bottoming out, whereas no differences in cement penetration into the bone were observed. Interpretation Flanged cups do not generate higher cementation pressure or better cement penetration than unflanged cups. A possible advantage of the flange, however, may be to protect the cup from bottoming out, and there is possibly better closure of the periphery around the cup, sealing off the cement-bone interface. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Acta Orthopaedica
volume
81
issue
5
pages
556 - 562
publisher
Taylor & Francis
external identifiers
  • wos:000282653300007
  • pmid:20860522
  • scopus:77957897086
ISSN
1745-3682
DOI
10.3109/17453674.2010.519167
language
English
LU publication?
yes
id
311cbb19-0683-44f0-ac41-797bf2b65eaf (old id 1687998)
alternative location
http://www.ncbi.nlm.nih.gov/pubmed/20860522?dopt=Abstract
date added to LUP
2010-10-06 08:17:01
date last changed
2018-05-29 11:03:04
@article{311cbb19-0683-44f0-ac41-797bf2b65eaf,
  abstract     = {Background and purpose Adequate depth of cement penetration and cement mantle thickness is important for the durability of cemented cups. A flanged cup, as opposed to unflanged, has been suggested to give a more uniform cement mantle and superior cement pressurization, thus improving the depth of cement penetration. This hypothesis was tested experimentally. Materials and methods The same cup design with and without flange (both without cement spacers) was investigated regarding intraacetabular pressure, cement mantle thickness, and depth of cement penetration. With machine control, the cups were inserted into open-pore ceramic acetabular models (10 flanged, 10 unflanged) and into paired cadaver acetabuli (10 flanged, 10 unflanged) with prior pressurization of the cement. Results No differences in intraacetabular pressures during cup insertion were found, but unflanged cups tended to migrate more towards the acetabular pole. Flanged cups resulted in thicker cement mantles because of less bottoming out, whereas no differences in cement penetration into the bone were observed. Interpretation Flanged cups do not generate higher cementation pressure or better cement penetration than unflanged cups. A possible advantage of the flange, however, may be to protect the cup from bottoming out, and there is possibly better closure of the periphery around the cup, sealing off the cement-bone interface.},
  author       = {Orskov, Mette and Abdulghani, Saba and McCarthy, Ian and Søballe, Kjeld and Flivik, Gunnar},
  issn         = {1745-3682},
  language     = {eng},
  number       = {5},
  pages        = {556--562},
  publisher    = {Taylor & Francis},
  series       = {Acta Orthopaedica},
  title        = {Comparison of flanged and unflanged acetabular cup design.},
  url          = {http://dx.doi.org/10.3109/17453674.2010.519167},
  volume       = {81},
  year         = {2010},
}