Document Detail


Intramedullary rod fixation compared with blade-plate-and-screw fixation for tibiotalocalcaneal arthrodesis: a biomechanical investigation.
MedLine Citation:
PMID:  14668514     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
BACKGROUND: Achieving stable fixation when performing tibiotalocalcaneal arthrodesis can be challenging, especially in osteopenic bone. The purpose of the current investigation was to compare the stiffness and fatigue endurance of blade-plate-and-screw fixation with intramedullary rod fixation in a cadaveric model. METHODS: In ten matched pairs of fresh-frozen cadaveric legs, a tibiotalocalcaneal arthrodesis was performed with use of a blade-plate and a 6.5-mm sagittal screw in one leg and with use of an intramedullary rod in the contralateral leg. After an initial load-deformation curve was obtained, each specimen was loaded to 270 N through 250,000 cycles at a rate of 3 Hz. RESULTS: Blade-plate-and-screw fixation resulted in significantly higher mean initial and final stiffness and decreased plastic deformation than did intramedullary rod fixation. In addition, there was an inverse correlation between bone-mineral density and the difference in plastic deformation noted between the specimens of each pair. CONCLUSIONS: Blade-plate fixation is biomechanically superior to intramedullary fixation for tibiotalocalcaneal arthrodesis.
Authors:
Christopher P Chiodo; Jorge I Acevedo; V James Sammarco; Brent G Parks; Henry R Boucher; Mark S Myerson; Lew C Schon
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  The Journal of bone and joint surgery. American volume     Volume:  85-A     ISSN:  0021-9355     ISO Abbreviation:  J Bone Joint Surg Am     Publication Date:  2003 Dec 
Date Detail:
Created Date:  2003-12-11     Completed Date:  2004-01-13     Revised Date:  2010-10-25    
Medline Journal Info:
Nlm Unique ID:  0014030     Medline TA:  J Bone Joint Surg Am     Country:  United States    
Other Details:
Languages:  eng     Pagination:  2425-8     Citation Subset:  AIM; IM    
Affiliation:
Department of Orthopaedic Surgery, Union Memorial Hospital, 3333 North Calvert Street, Baltimore, MD 21218, USA.
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MeSH Terms
Descriptor/Qualifier:
Analysis of Variance
Arthrodesis / instrumentation*,  methods
Biomechanics
Bone Plates*
Bone Screws*
Cadaver
Calcaneus / surgery
Compressive Strength
Equipment Failure
Equipment Safety
Female
Fracture Fixation, Intramedullary / instrumentation*,  methods
Humans
Internal Fixators*
Male
Probability
Sensitivity and Specificity
Stress, Mechanical
Tibia / surgery

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


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