Document Detail

Risk factors for early dislocation after total hip arthroplasty: a matched case-control study.
MedLine Citation:
PMID:  20808008     Owner:  NLM     Status:  MEDLINE    
PURPOSE: To evaluate risk factors for early dislocation after primary total hip arthroplasty (THA).
METHODS: Records of 175 cases with dislocation during hospitalisation after THA and 651 controls without dislocation were reviewed. Cases and controls were matched for age, gender, body mass index classification, primary diagnosis, cup design, hospital, and year of intervention. Version and inclination of the acetabular component and version of the femoral component were assessed intra- and post-operatively. Various risk factors were analysed, including surgical approach, cup positioning, combined cup and stem positioning, and femoral head size.
RESULTS: The posterior approach was 6 fold more prone to dislocation (odds ratio [OR]=6.3, p<0.018) than the anterolateral or straight lateral approach. With regard to combined cup and stem positioning, the acceptable position was at significantly higher risk of dislocation than the ideal position (OR=2.59, p=0.033). Larger femoral head sizes were associated with significantly lower risk of dislocation (OR=0.84, p=0.02).
CONCLUSION: Surgical approach, combined cup and stem positioning, and femoral head size were significant risk factors for dislocation during hospitalisation.
Marcel Dudda; A Gueleryuez; E Gautier; A Busato; C Roeder
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Publication Detail:
Type:  Comparative Study; Journal Article; Multicenter Study    
Journal Detail:
Title:  Journal of orthopaedic surgery (Hong Kong)     Volume:  18     ISSN:  1022-5536     ISO Abbreviation:  J Orthop Surg (Hong Kong)     Publication Date:  2010 Aug 
Date Detail:
Created Date:  2010-09-02     Completed Date:  2011-01-25     Revised Date:  2011-06-13    
Medline Journal Info:
Nlm Unique ID:  9440382     Medline TA:  J Orthop Surg (Hong Kong)     Country:  China    
Other Details:
Languages:  eng     Pagination:  179-83     Citation Subset:  IM    
Department of Orthopaedic Surgery, Inselspital Berne, University of Berne, Switzerland.
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MeSH Terms
Arthroplasty, Replacement, Hip / adverse effects*
Body Mass Index
Europe / epidemiology
Follow-Up Studies
Hip Dislocation / epidemiology,  etiology*,  radiography
Odds Ratio
Osteoarthritis, Hip / surgery
Postoperative Complications
Retrospective Studies
Risk Factors
Treatment Failure
Comment In:
J Orthop Surg (Hong Kong). 2011 Apr;19(1):126; author reply 126-7   [PMID:  21519095 ]

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

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