Document Detail

Micromotion of noncemented Freeman-Samuelson knee prostheses in gonarthrosis. A roentgen-stereophotogrammetric analysis of eight successful cases.
MedLine Citation:
PMID:  3349679     Owner:  NLM     Status:  MEDLINE    
Micromotion of the tibial component of eight Freeman-Samuelson arthroplasties without cement for gonarthrosis were followed for two years and studied by roentgen-stereophotogrammetric analysis (RSA). In five cases, displacement over time was studied, and in all cases migration was found to range from 0.7 to 4.8 mm after two years. One tibial component migrated continuously during the period studied, while the remaining prostheses migrated mostly during the first six months. The direction of the migration was erratic. Inducible displacement ranging from 0.8 to 5.0 mm was found in all cases. Clinically, all of the patients were scored as successful although one with continuous migration had the lowest score. This degree of micromotion is compatible with good results after two years, and appears to be a characteristic of the immediate interlocking fixation used in the Freeman-Samuelson prosthesis.
L Ryd; B E Albrektsson; P Herberts; A Lindstrand; G Selvik
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Publication Detail:
Type:  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:  1988 Apr 
Date Detail:
Created Date:  1988-05-12     Completed Date:  1988-05-12     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:  205-12     Citation Subset:  AIM; IM    
Department of Orthopedics, University Hospital, Lund, Sweden.
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MeSH Terms
Arthritis / radiography*,  surgery
Follow-Up Studies
Knee Joint / radiography*
Knee Prosthesis*
Prospective Studies
Prosthesis Design
Stress, Mechanical

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