Document Detail

Use of a constrained tripolar acetabular liner to treat intraoperative instability and postoperative dislocation after total hip arthroplasty: a review of our experience.
MedLine Citation:
PMID:  15577475     Owner:  NLM     Status:  MEDLINE    
Constrained acetabular components have been used to treat certain cases of intraoperative instability and postoperative dislocation after total hip arthroplasty. We report our experience with a tripolar constrained component used in these situations since 1988. The outcomes of the cases where this component was used were analyzed for component failure, component loosening, and osteolysis. At average 10-year followup, for cases treated for intraoperative instability (2 cases) or postoperative dislocation (4 cases), the component failure rate was 6% (6 of 101 hips in 5 patients). For cases where the constrained liner was cemented into a fixed cementless acetabular shell, the failure rate was 7% (2 of 31 hips in 2 patients) at 3.9-year average followup. Use of a constrained liner was not associated with an increased osteolysis or aseptic loosening rate. This tripolar constrained acetabular liner provided total hip arthroplasty construct stability in most cases in which it was used for intraoperative instability or postoperative dislocation.
John J Callaghan; Michael R O'Rourke; Devon D Goetz; David G Lewallen; Richard C Johnston; William N Capello
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Clinical orthopaedics and related research     Volume:  -     ISSN:  0009-921X     ISO Abbreviation:  Clin. Orthop. Relat. Res.     Publication Date:  2004 Dec 
Date Detail:
Created Date:  2004-12-03     Completed Date:  2005-01-28     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0075674     Medline TA:  Clin Orthop Relat Res     Country:  United States    
Other Details:
Languages:  eng     Pagination:  117-23     Citation Subset:  AIM; IM    
University of Iowa College of Medicine, Iowa City, IA, 52242, USA.
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MeSH Terms
Arthroplasty, Replacement, Hip / adverse effects*,  methods
Cohort Studies
Follow-Up Studies
Hip Dislocation / prevention & control*
Hip Prosthesis*
Intraoperative Complications / prevention & control*
Middle Aged
Pain Measurement
Postoperative Complications / prevention & control
Prosthesis Design
Prosthesis Failure
Range of Motion, Articular / physiology
Recovery of Function
Retrospective Studies
Risk Factors
Treatment Outcome

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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