Lumbar neurogenic claudication secondary to spinal stenosis causes narrowing of the spinal canal that contributes to extremity lower back pain. Lumbar extension, as seen in standing and walking, exacerbates symptoms by decreasing the foraminal height, width, and area, whereas flexion, as seen in sitting, improves symptoms by increasing the cross-sectional area of the foramen. Interspinous process devices have been developed to treat symptomatic lumbar stenosis [1]. The device is placed between the spinous processes and serves to limit the amount of extension that can occur beyond a neutral alignment. The objective of this study was to perform low endurance cyclic tests on the In-Space spinous process spacer (Synthes Spine) to assess fixation and containment in a human cadaveric spine model in vitro. The device was cyclically tested under an alternating sequence of combined loading conditions using a new protocol developed on a robotic based spinal testing system (Spine Robot).
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ASME 2008 Summer Bioengineering Conference
June 25–29, 2008
Marco Island, Florida, USA
Conference Sponsors:
- Bioengineering Division
ISBN:
978-0-7918-4321-5
PROCEEDINGS PAPER
Low Endurance Testing of a Spinous Process Spacer Available to Purchase
Denis J. DiAngelo,
Denis J. DiAngelo
University of Tennessee Health Science Center, Memphis, TN
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Elizabeth J. Sander,
Elizabeth J. Sander
University of Tennessee Health Science Center, Memphis, TN
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Nephi A. Zufelt,
Nephi A. Zufelt
University of Tennessee Health Science Center, Memphis, TN
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Brian P. Kelly,
Brian P. Kelly
University of Tennessee Health Science Center, Memphis, TN
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Kevin T. Foley
Kevin T. Foley
University of Tennessee Health Science Center, Memphis, TN
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Denis J. DiAngelo
University of Tennessee Health Science Center, Memphis, TN
Elizabeth J. Sander
University of Tennessee Health Science Center, Memphis, TN
Nephi A. Zufelt
University of Tennessee Health Science Center, Memphis, TN
Brian P. Kelly
University of Tennessee Health Science Center, Memphis, TN
Kevin T. Foley
University of Tennessee Health Science Center, Memphis, TN
Paper No:
SBC2008-192985, pp. 869-870; 2 pages
Published Online:
March 13, 2014
Citation
DiAngelo, DJ, Sander, EJ, Zufelt, NA, Kelly, BP, & Foley, KT. "Low Endurance Testing of a Spinous Process Spacer." Proceedings of the ASME 2008 Summer Bioengineering Conference. ASME 2008 Summer Bioengineering Conference, Parts A and B. Marco Island, Florida, USA. June 25–29, 2008. pp. 869-870. ASME. https://doi.org/10.1115/SBC2008-192985
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