Journal article
Shell Retention With a Cemented Acetabular Liner
Orthopedics (Thorofare, N.J.), Vol.32(9), pp.673-675
09/01/2009
DOI: 10.3928/01477447-20090728-17
PMID: 19751011
Abstract
The authors reviewed the indications, technique, and results of cementing an acetabular liner into a well-fixed cementless acetabular shell. Indications for this procedure include a worn acetabular liner in a well-fixed cementless acetabular shell as well as an unstable total hip construct where the shell is secured. To perform such a procedure, an adequate shell diameter is necessary to accept an acetabular liner that will enable 2 mm of cement mantle around it. If the shell has screw holes, there is no need to score the acetabular shell, but otherwise the acetabular shell must be scored to a 1-mm depth in a spiderweb configuration. As for the acetabular liner, it too must be scored to a 1-mm depth in a spiderweb configuration (which enhances torsional stability) as well as a circular configuration to provide optimal lever-out strength. We have evaluated 31 constrained liners and 30 nonconstrained liners with this preparation. The failure rate in the constrained liner series was 6%, and no failures occurred in the nonconstrained series. One dislocation occurred in the nonconstrained series where patients were typically placed in a brace or cast for 6 weeks. This option should be considered in cases with worn-through acetabular liners for unstable configurations when the acetabular shell is well fixed and is of adequate diameter to accept such a construct.
Details
- Title: Subtitle
- Shell Retention With a Cemented Acetabular Liner
- Creators
- John J Callaghan - University of Iowa, Roy J. Carver Department of Biomedical EngineeringSteve LiuNathan Schularick
- Resource Type
- Journal article
- Publication Details
- Orthopedics (Thorofare, N.J.), Vol.32(9), pp.673-675
- Publisher
- SLACK INCORPORATED
- DOI
- 10.3928/01477447-20090728-17
- PMID
- 19751011
- ISSN
- 0147-7447
- eISSN
- 1938-2367
- Language
- English
- Date published
- 09/01/2009
- Academic Unit
- Roy J. Carver Department of Biomedical Engineering; Orthopedics and Rehabilitation
- Record Identifier
- 9984634933702771
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