Document Detail


Migration of the uncemented CLS acetabular component.
MedLine Citation:
PMID:  10037336     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The migration of uncemented press-fit CLS (Cementless Total Hip Replacement System) acetabular cups was measured retrospectively from standard anteroposterior pelvic radiographs using a digitizer and software specifically developed for this study. A radiographic and clinical review also were undertaken. There were 96 patients in the study group. The mean follow-up for radiographic review was 2.23 years, and the mean follow-up for clinical review was 3 years. Migration was measured in the cranial and medial directions. Mean migration of the cup at 2 years was 1.35 mm in the cranial direction and 2.15 mm in the medial direction. Radiographic appearances altered little over the study period. Fifty-five (57.3%) patients demonstrated bone ingrowth onto the prosthesis, predominantly in DeLee and Charnley zone 1. Twenty-one patients demonstrated nonprogressive sclerotic lines; no lucent lines were encountered. Statistical analysis showed a significant correlation between acetabular ingrowth and reduced cup migration in the medial direction (P = .011 at 5 years). There was no statistical relationship between migration of the cup and radiographic features or clinical outcome.
Authors:
M S Davies; B C Parker; D A Ward; E Hern; J Hua; P S Walker
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Orthopedics     Volume:  22     ISSN:  0147-7447     ISO Abbreviation:  Orthopedics     Publication Date:  1999 Feb 
Date Detail:
Created Date:  1999-04-16     Completed Date:  1999-04-16     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  7806107     Medline TA:  Orthopedics     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  219-22     Citation Subset:  IM    
Affiliation:
Department of Orthopedic Surgery, Kingston Hospital OHS Trust, Kingston upon Thames, Surrey, United Kingdom.
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MeSH Terms
Descriptor/Qualifier:
Acetabulum*
Adult
Aged
Arthroplasty, Replacement, Hip / adverse effects*,  instrumentation
Bone Cements
Female
Foreign-Body Migration / etiology*,  radiography*
Humans
Image Processing, Computer-Assisted
Male
Middle Aged
Osseointegration
Prosthesis Design
Prosthesis Failure*
Retrospective Studies
Time Factors
Chemical
Reg. No./Substance:
0/Bone Cements

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


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