Elastic, plastic, and total strains in human and porcine pedicle trabecular bone and PU-foam after pedicle screw insertion by utilizing functional micro-CT imaging Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/z603r179z

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • Pedicle screw breakage and loosening remain as clinical complications of short segment instrumentation procedures for spinal stabilization. This study has directly visualized and measured elastic, plastic and total vertebral pedicle trabecular bone full-field strains in the regions immediately surrounding the pedicle screw during pedicle screw insertion by utilizing functional microCT imaging and digital volume correlation. Human, porcine and polyurethane foam samples were analyzed and compared. Analysis showed that when osteoporotic human, normal human and porcine pedicle trabecular bone samples were compared, osteoporotic samples showed higher peak plastic strains and greater variability of these strains from their means. This suggests that osteoporotic human samples are non-uniformly elastic and plastic, while normal human and porcine samples are more uniformly elastic and plastic throughout the trabecular structure. PU-foams are not appropriate as models for pedicle trabecular bone in the in vivo environment since strain results showed dissimilar plastic and elastic strain magnitudes than human and porcine pedicle trabecular bone. This study may aid in the development of performance criteria for new PU-foams and improved pedicle screw designs.
Resource Type
Date Available
Date Copyright
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Academic Affiliation
Non-Academic Affiliation
Subject
Rights Statement
Peer Reviewed
Language
Digitization Specifications
  • File scanned at 300 ppi (Monochrome, 256 Grayscale) using Capture Perfect 3.0.82 on a Canon DR-9080C in PDF format. CVista PdfCompressor 4.0 was used for pdf compression and textual OCR.
Replaces
Additional Information
  • description.provenance : Made available in DSpace on 2012-08-08T18:06:04Z (GMT). No. of bitstreams: 1 MoranSeanT2004.pdf: 16834995 bytes, checksum: e8bc29ec063dd0b75bf03a7bcd28bc4b (MD5) Previous issue date: 2004-02-11
  • description.provenance : Submitted by Kevin Martin (martikev@onid.orst.edu) on 2012-08-07T17:33:01Z No. of bitstreams: 1 MoranSeanT2004.pdf: 16834995 bytes, checksum: e8bc29ec063dd0b75bf03a7bcd28bc4b (MD5)
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2012-08-08T18:03:47Z (GMT) No. of bitstreams: 1 MoranSeanT2004.pdf: 16834995 bytes, checksum: e8bc29ec063dd0b75bf03a7bcd28bc4b (MD5)
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2012-08-08T18:06:04Z (GMT) No. of bitstreams: 1 MoranSeanT2004.pdf: 16834995 bytes, checksum: e8bc29ec063dd0b75bf03a7bcd28bc4b (MD5)

Relationships

In Administrative Set:
Last modified: 08/20/2017

Downloadable Content

Download PDF
Citations:

EndNote | Zotero | Mendeley

Items