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Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XXVI | Pages 47 - 47
1 Jun 2012
Fielding LC Alamin TF Voronov LI Havey RM McIntosh BW Parikh A Tsitsopoulos P Patwardhan AG
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Statement of Purpose

The purpose of this experiment was to characterize the biomechanical properties of a minimally-invasive flexion-restricting stabilization system (FRSS) developed to address flexion instability.

Background

Lumbar flexion instability is associated with degenerative pathology such as degenerative spondylolisthesis (DS) as well as resection of posterior structures during neural decompression. Flexion instability may be measured by increased total flexion/extension range of motion (ROM), as well as reduced stiffness within the high flexibility zone (HFZ, the range in which most activities occur). Flexion and segmental translation are known to be coupled; therefore increased flexion may exacerbate translational instability, particularly in DS.