Design and development of a biomechanical apparatus to test the integrity of the Luque orthopaedic internal bone-plate fixation system

This paper describes the design and construction of a biomechanical model that will determine the pull-out strengths and fatigue failure of internal fixation devices used at the lumbosacral junction. Fusions at this junction have the highest failure rate. It is suggested that devices that successful...

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Bibliographic Details
Published inJournal of medical engineering & technology Vol. 17; no. 4; p. 141
Main Authors Sadeghipour, K, Baren, R, Ortiz, B A, Clements, D H
Format Journal Article
LanguageEnglish
Published England 1993
Subjects
Biomechanical Phenomena
Bone Plates
Equipment Failure
Fracture Fixation, Internal - instrumentation
Humans
Lumbar Vertebrae - physiopathology
Lumbar Vertebrae - surgery
Models, Anatomic
Sacrum - physiopathology
Sacrum - surgery
Spinal Fusion - instrumentation
Weight-Bearing - physiology
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Summary:This paper describes the design and construction of a biomechanical model that will determine the pull-out strengths and fatigue failure of internal fixation devices used at the lumbosacral junction. Fusions at this junction have the highest failure rate. It is suggested that devices that successfully fix this vertebral unit will be effective at other levels of the spine. A model that tests any device designed for use at the lumbosacral junction will therefore provide a uniform measure of the effectiveness of different kinds of instrumentation at the L5-S1 vertebral unit. It will also provide predictive values for fixation systems at other spinal levels. A real-time data-acquisition system was also designed and used to define and determine the failure of the Luque orthopaedic bone-plate fixation device.
ISSN:0309-1902
DOI:10.3109/03091909309087595