Journal article
Cementing Acetabular Liners Into Secure Cementless Shells for Polyethylene Wear Provides Durable Mid-term Fixation
Clinical orthopaedics and related research, Vol.470(11), pp.3142-3147
11/01/2012
DOI: 10.1007/s11999-012-2380-x
PMCID: PMC3462859
PMID: 22585349
Abstract
Background In a previous experiment studying cementation of liners into cementless acetabular shells, placing grooves in the liner in a spider-web configuration created the greatest construct strength. Scoring shells without screw holes or other texturing helped prevent failure at the shell-cement interface. However, it was unclear whether these practices caused durable constructs in patients.
Questions/purposes We therefore determined (1) rerevision rates; (2) functional scores (Harris hip scores, WOMAC, and SF-36); (3) acetabular loosening rates; and (4) acetabular osteolysis rates in patients in whom we cemented nonconstrained liners into well-fixed and well-positioned acetabular shells.
Methods We prospectively followed 30 patients with 31 total hip arthroplasties in which a worn acetabular liner was revised by cementing a new liner into the existing shell that was stable and well positioned. Acetabular liners were prepared as determined by our previous study. Twenty-seven of the 30 patients (28 hips) were evaluated clinically. We recorded revisions and determined radiographic loosening and osteolysis. The minimum clinical followup was 2 years (mean, 5.3 years; range, 2-10 years). Twenty-six hips (87%) had minimum 2-year radiographic followup with an average length of 4.8 years.
Results No hip required rerevision during the followup interval. Two hips (6%) dislocated once, both treated non-operatively. Harris hip scores, WOMAC, and SF-36 scores increased over preoperatively at last followup. All acetabular shells and liners were radiographically stable without evidence of loosening or progressive acetabular osteolysis.
Conclusions Cementation of a liner into a well-fixed cementless shell after scoring in a spider-web configuration provided secure fixation with no failures of the construct at average 5.3 years followup.
Level of Evidence Level IV, therapeutic study. See Guidelines for Authors for a complete description of levels of evidence.
Details
- Title: Subtitle
- Cementing Acetabular Liners Into Secure Cementless Shells for Polyethylene Wear Provides Durable Mid-term Fixation
- Creators
- John J. Callaghan - University of IowaDavid W. Hennessy - University of Wisconsin–MadisonSteve S. Liu - University of IowaKirsten E. Goetz - University of IowaAnneliese D. Heiner - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Clinical orthopaedics and related research, Vol.470(11), pp.3142-3147
- Publisher
- Lippincott Williams & Wilkins
- DOI
- 10.1007/s11999-012-2380-x
- PMID
- 22585349
- PMCID
- PMC3462859
- ISSN
- 0009-921X
- eISSN
- 1528-1132
- Number of pages
- 6
- Grant note
- DePuy, Warsaw, IN, USA Lippincott, Williams & Wilkins, Philadelphia, PA, USA
- Language
- English
- Date published
- 11/01/2012
- Academic Unit
- Roy J. Carver Department of Biomedical Engineering; Orthopedics and Rehabilitation
- Record Identifier
- 9984622754102771
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