41 0

Effect of Soft Tissue Thickness Over the Posterior Border of the Vertebral Body and Disc Space on Cage Placement During Posterior Lumbar Interbody Fusion : A Cadaveric Study

Title
Effect of Soft Tissue Thickness Over the Posterior Border of the Vertebral Body and Disc Space on Cage Placement During Posterior Lumbar Interbody Fusion : A Cadaveric Study
Author
민경환
Keywords
spine; vertebral body; posterior interbody fusion; cage; soft tissue structures
Issue Date
2012-11
Publisher
WILEY-BLACKWELL
Citation
CLINICAL ANATOMY, Nov 2012, 25(8), P.1066-1073, 8P.
Abstract
In the present study, we investigated whether there is a difference between visual depth (VD) and radiological image depth (RD) of cages (i.e., structural interbody support devices) placed in disc spaces during posterior lumbar interbody fusion and whether soft tissues covering the posterior border of the vertebral body and associated disc space are the cause of any observed differences. Using digital calipers, cages were inserted at a depth of 5 mm from the soft tissues covering the posterior border of the vertebral body and disc space under direct vision; this depth was defined as VD. After insertion, RD was measured in triplicate. The reliability of RD measurements was evaluated using an intraclass coefficient test. To identify the cause of differences between VD and RD, the thicknesses of soft tissues were measured microscopically. A total of 40 lumbar intervertebral disc spaces with cages were evaluated. The mean RD of cages was 3.12 mm, while the mean difference between the VD and RD of cages (DVRD) was 1.91 mm. On histological examination, the mean thickness of the soft tissue was 2.02 mm. Comparative analysis between histological values and DVRD showed no statistical difference (P = 1.14, 1.55, 0.06). There was a significant difference between VD and RD during cage placement, and soft tissue structure appeared to be responsible for the DVRD of inserted cages. Therefore, cages should be inserted deeper to account for differences between visual and radiological image depths. Clin. Anat. 25:10661073, 2012. (c) 2012 Wiley Periodicals, Inc.
URI
http://onlinelibrary.wiley.com.access.hanyang.ac.kr/doi/10.1002/ca.22051/abstracthttp://hdl.handle.net/20.500.11754/47375
ISSN
0897-3806
DOI
10.1002/ca.22051
Appears in Collections:
COLLEGE OF MEDICINE[S](의과대학) > MEDICINE(의학과) > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE