The effects of spinal fixation and destabilization on the biomechanical and histologic properties of spinal ligaments. An in vivo study

Spine
Y KotaniP C McAfee

Abstract

An animal study was conducted to assess whether different surgical procedures of spinal fixation and destabilization would influence the biomechanics and histology of lumbar spinal ligaments. To investigate the effects of spinal fixation and destabilization as well as surgical intervention itself on the biomechanical and histologic properties of lumbar spinal ligaments. Although several investigators have reported normal biomechanical properties of different spinal ligaments, there have been no studies in which changes in spinal ligament properties, secondary to the altered biomechanical environment provided by such surgical procedures as spinal fixation and destabilization, have been investigated. Thirty-six mature sheep were divided into four groups: Group I: nonsurgical control: Group II: sham operation consisting of bilateral posterolateral exposure at L4-L5; Group III: spinal fixation using transpedicular screws and plates and bilateral posterolateral bone graft at L4-L5; and Group IV: spinal destabilization consisting of bilateral facetectomy and anterior discectomy at L4-L5. Four months after surgery, the biomechanical analysis included destructive tensile testing of four different bone-ligament-bone complexes at the ope...Continue Reading

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Citations

Oct 22, 2005·Annals of Biomedical Engineering·M A WettergreenM A K Liebschner
Aug 30, 2008·HSS Journal : the Musculoskeletal Journal of Hospital for Special Surgery·Jocelyn M CottrellElizabeth R Myers
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Aug 27, 2013·BMC Musculoskeletal Disorders·Antonius PizanisTim Pohlemann
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Aug 29, 2006·The Spine Journal : Official Journal of the North American Spine Society·Allyson IanuzziPartap S Khalsa
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Jan 26, 2006·Clinical Biomechanics·Hua-Zi XuLi-Yang Dai
May 8, 2010·The Open Orthopaedics Journal·Ali Fahir OzerSabri Aydin

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