Biomechanical evaluation of an expandable nail for the fixation of midshaft fractures

Details

Serval ID
serval:BIB_FA1D9C22D71D
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Biomechanical evaluation of an expandable nail for the fixation of midshaft fractures
Journal
Journal of Trauma
Author(s)
Maher  S. A., Meyers  K., Borens  O., Suk  M., Grose  A., Wright  T. M., Helfet  D.
ISSN
1529-8809 (Electronic)
Publication state
Published
Issued date
2007
Volume
63
Number
1
Pages
103-107
Notes
DA - 20070711
LA - eng
PT - Journal Article
PT - Randomized Controlled Trial
PT - Research Support, Non-U.S. Gov't
SB - AIM
SB - IM
Abstract
BACKGROUND: The objective of this study was to compare the torsional stability of diaphyseal long bone fractures fixed with either a Fixion nail (DiscOTech, Monroe Township, NJ) or a standard locked Zimmer M/DN locked nail (Zimmer, Warsaw, IN). METHODS: Two fracture models were used to evaluate the bone-implant constructs. A transverse osteotomy was created in all tibiae, and a spiral fracture was created in all humeri. Paired specimens were randomly assigned to receive either a Fixion or Zimmer M/DN locked nail. Each implanted construct was cyclically loaded in torsion, and construct stiffness for each fracture type and each bone computed from the resulting load-displacement curves. RESULTS: Performance of the Fixon nail in the tibial transverse model was variable: 2 of 10 implanted constructs failed during testing, and average construct stiffness was significantly greater for the Zimmer nail. No significant difference was found between the stiffness of the Zimmer M/DN and Fixion implanted humeral constructs either with or without the interlock. CONCLUSIONS: Fracture type significantly affected the performance of the Fixion nail. Our results suggest that the Fixion nail is most suitable for use in fractures where torsional loads across the fracture site are shared between the nail and the bony ends of the fracture, as in a spiral fracture
Keywords
Biomechanics/Bone Nails/Equipment Design/Fracture Fixation,Intramedullary/Humans/Humeral Fractures/instrumentation/physiopathology/Rotation/surgery/Tibial Fractures/Torque/Torsion Abnormality
Pubmed
Web of science
Create date
25/02/2008 12:59
Last modification date
20/08/2019 16:25
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