Document Detail

3D CT analysis of combined cup and stem anteversion in cases of cup navigation in hip arthroplasty.
MedLine Citation:
PMID:  20954630     Owner:  NLM     Status:  In-Process    
Navigation of the cup in total hip arthroplasty is well analyzed and shows accurate results, reducing cup outliers of Lewinnek's "safe zone." With regard to the combined anteversion of cup and stem, however, a "new" safe zone with a range of 25° to 50° has been published. The aim of this study was to analyze total anteversion (cup and stem) by postoperative 3D computed tomography in isolated cup navigation cases. In 46 patients, the mean combined anteversion was 34.4° (range, 16.3°-57.3°, SD ± 9.3°) with 10 outliers. The mean cup anteversion was 19.5° (range, 11°-27°, SD ± 3.7°). Regarding Lewinnek's "safe zone" (cup only), we observed 5 outliers. An improvement of technique of stem implantation or navigation may reduce outliers of combined anteversion.
Georgi I Wassilew; Carsten Perka; Christian Koenig; Viktor Janz; Patrick Asbach; Olaf Hasart
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Orthopedics     Volume:  33     ISSN:  1938-2367     ISO Abbreviation:  Orthopedics     Publication Date:  2010 Oct 
Date Detail:
Created Date:  2010-10-19     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7806107     Medline TA:  Orthopedics     Country:  United States    
Other Details:
Languages:  eng     Pagination:  48-51     Citation Subset:  IM    
Copyright Information:
Copyright 2010, SLACK Incorporated.
Charité Orthopaedic Department, Center for Musculoskeletal Surgery, Charité, Charitéplatz 1, 10117, Berlin, Germany.
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