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Arch-shaped versus flat arthrodesis of the ankle joint: strength measurements using synthetic cancellous bone

Lauge-Pedersen, Henrik LU ; Aspenberg, Per LU ; Ryd, Leif LU and Tanner, KE (2002) In Proceedings of the Institution of Mechanical Engineers. Part H: Journal of Engineering in Medicine 216(H1). p.43-49
Abstract
The aim Of this Study was to see if preservation of the arch shape of the ankle at arthrodesis contributes to stability. The ankle joint was simulated by paired blocks of a synthetic material corresponding to rheumatoid cancellous bone with low stiffness and strength. Flat end constructs with and without subchondral bone were compared with arch-shape constructs with and without subchondral bone. The pairs were fixed with two screws simulating an arthrodesis. These constructs were then tested to failure in four-point bending and torque. In four-point bending the subchondral bone increased the strength, regardless of shape. Stiffness was higher in the arch-shaped specimens but was not influenced b the subchondral bone. In torque, both... (More)
The aim Of this Study was to see if preservation of the arch shape of the ankle at arthrodesis contributes to stability. The ankle joint was simulated by paired blocks of a synthetic material corresponding to rheumatoid cancellous bone with low stiffness and strength. Flat end constructs with and without subchondral bone were compared with arch-shape constructs with and without subchondral bone. The pairs were fixed with two screws simulating an arthrodesis. These constructs were then tested to failure in four-point bending and torque. In four-point bending the subchondral bone increased the strength, regardless of shape. Stiffness was higher in the arch-shaped specimens but was not influenced b the subchondral bone. In torque, both arch-shape and subchondral bone increase the strength. Stiffness was increased by arch-shape but not subchondral bone. The results imply that the arch-shape and subchondral bone should be preserved when performing an ankle arthrodesis, especially in weak rheumatoid bone. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
strength, stiffness, stability, fixation, ankle biomechanics, ankle arthrodesis
in
Proceedings of the Institution of Mechanical Engineers. Part H: Journal of Engineering in Medicine
volume
216
issue
H1
pages
43 - 49
publisher
Mechanical Engineering Publications For The Institution Of Mechanical Engineers
external identifiers
  • wos:000175194100006
  • pmid:11905560
  • scopus:0036105225
ISSN
0954-4119
DOI
10.1243/0954411021536270
language
English
LU publication?
yes
id
f6ca2723-e6cd-4ce9-89d7-059bb4aaf798 (old id 339759)
alternative location
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=11905560&dopt=Abstract
date added to LUP
2007-11-05 15:49:55
date last changed
2017-05-14 04:16:22
@article{f6ca2723-e6cd-4ce9-89d7-059bb4aaf798,
  abstract     = {The aim Of this Study was to see if preservation of the arch shape of the ankle at arthrodesis contributes to stability. The ankle joint was simulated by paired blocks of a synthetic material corresponding to rheumatoid cancellous bone with low stiffness and strength. Flat end constructs with and without subchondral bone were compared with arch-shape constructs with and without subchondral bone. The pairs were fixed with two screws simulating an arthrodesis. These constructs were then tested to failure in four-point bending and torque. In four-point bending the subchondral bone increased the strength, regardless of shape. Stiffness was higher in the arch-shaped specimens but was not influenced b the subchondral bone. In torque, both arch-shape and subchondral bone increase the strength. Stiffness was increased by arch-shape but not subchondral bone. The results imply that the arch-shape and subchondral bone should be preserved when performing an ankle arthrodesis, especially in weak rheumatoid bone.},
  author       = {Lauge-Pedersen, Henrik and Aspenberg, Per and Ryd, Leif and Tanner, KE},
  issn         = {0954-4119},
  keyword      = {strength,stiffness,stability,fixation,ankle biomechanics,ankle arthrodesis},
  language     = {eng},
  number       = {H1},
  pages        = {43--49},
  publisher    = {Mechanical Engineering Publications For The Institution Of Mechanical Engineers},
  series       = {Proceedings of the Institution of Mechanical Engineers. Part H: Journal of Engineering in Medicine},
  title        = {Arch-shaped versus flat arthrodesis of the ankle joint: strength measurements using synthetic cancellous bone},
  url          = {http://dx.doi.org/10.1243/0954411021536270},
  volume       = {216},
  year         = {2002},
}