Abstract
OBJECTIVE Spinal stability is attributed in part to osteoligamentous structures, including the vertebral body, facets, intervertebral discs, and posterior elements. The materials in this study provide an opportunity to augment the degenerated nucleus without removing native disc material, a procedure introduced here as "fortification." The objective of this study was to determine the effect of nucleus fortification on lumbar disc biomechanics. METHODS The authors performed in vitro analysis of human cadaveric functional spinal units (FSUs), along with characterization and quantification of movement of the units using biomechanical data in intact, disc-only, and fortified specimens. The units underwent removal of all posterior elements and annulus and were fortified by injecting a biogel into the nucleus pulposus. Each specimen was subjected to load testing, range of motion (ROM) quantification, and disc bulge measurements. Optoelectric tracking was used to quantify disc bulge. These criteria were assessed in the intact, disc-only, and fortified treatments. RESULTS Disc-only FSUs resulted in increased ROM when compared with intact and fortified conditions. Fortification of the FSU resulted in partial restoration of normal ROM in...Continue Reading
References
Apr 1, 1978·Journal of Neurocytology·H Büssow
Dec 1, 1992·Journal of Spinal Disorders·M M Panjabi
Jun 1, 1996·Spine·F Postacchini
Nov 12, 1998·Journal of Spinal Disorders·N R CrawfordC A Dickman
Jun 1, 2000·Spine·T AmundsenF Lilleâs
May 1, 1959·Journal of Neurosurgery·W B HAMBY, H T GLASER
Dec 31, 2003·Spine·Xuemei LuoLloyd Hey
Feb 8, 2006·Clinical Orthopaedics and Related Research·John N Awad, Ronald Moskovich
Apr 6, 2006·The Journal of Bone and Joint Surgery. American Volume·Sally RobertsJanis Menage
Jul 27, 2006·European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·Lawrence M Boyd, Andrew J Carter
Jun 1, 2007·The New England Journal of Medicine·Wilco C PeulUNKNOWN Leiden-The Hague Spine Intervention Prognostic Study Group
Feb 15, 2008·AJNR. American Journal of Neuroradiology·R Rahme, R Moussa
Nov 29, 2008·Medical Engineering & Physics·Qing Hang ZhangEe Chon Teo
Oct 1, 2010·Spine·Emily M LindleyVikas V Patel
Aug 8, 2012·Spine·Alan H DanielsJoseph J Crisco
Jul 23, 2013·ANZ Journal of Surgery·Prema Thavaneswaran, Meegan Vandepeer
Jan 1, 2011·SAS Journal·Mathieu CuchanskiBoyle C Cheng