Document Detail

Continuous monitoring of forces during tibial lengthening by distraction epiphysiolysis.
MedLine Citation:
PMID:  1561874     Owner:  NLM     Status:  MEDLINE    
A leg length inequality of 5 cm was compensated by lengthening of the proximal tibia by distraction epiphysiolysis. During the first 7 weeks of lengthening the distraction force was monitored continuously by strain gauges attached to the extension bars of the external distraction device. The increase in length was 1.25 mm a day. The force registration showed a visco-elastic response of the tissue to distraction. In the first week the distraction force increased up to 791 N. Then lysis occurred, followed by a sudden decrease in force to an average level of 150 N. During subsequent distraction, pain and clinical symptoms could be associated with increasing tension and inadequate stress relaxation of soft tissues. Adjusting the distraction rate decreased the build-up of force in the tissue and ameliorated the clinical symptoms. These results show that force measurements can be clinically useful for appropriately adjusting the distraction rate.
P M van Roermund; R A Wijlens; W Renooij
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Publication Detail:
Type:  Case Reports; Journal Article    
Journal Detail:
Title:  Acta orthopaedica Belgica     Volume:  58     ISSN:  0001-6462     ISO Abbreviation:  Acta Orthop Belg     Publication Date:  1992  
Date Detail:
Created Date:  1992-05-14     Completed Date:  1992-05-14     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  2985165R     Medline TA:  Acta Orthop Belg     Country:  BELGIUM    
Other Details:
Languages:  eng     Pagination:  63-8     Citation Subset:  IM    
Department of Orthopaedics, Utrecht University Hospital, The Netherlands.
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MeSH Terms
Bone Lengthening / methods*
Epiphyses / physiopathology
External Fixators*
Leg Length Inequality / physiopathology,  therapy*
Tibia / physiopathology
Traction / methods

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