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The Pedicles Are Not the Densest Regions of the Lumbar Vertebrae: Implications for Bone Quality Assessment and Surgical Treatment Strategy by Hohn, Eric A.; Chu, Bryant; Martin, Audrey; Yu, Elizabeth; Telles, Connor; Leasure, Jeremi; Lynch, Tennyson L.; Kondrashov, Dimitriy is a Medicine article available to read on EtoBox.

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## Study Design: Cadaver study. ## Objective: To determine the bone density of lumbar vertebral anatomic subregions. Bone mineral density (BMD) is a major factor in osseous fixation construct strength. The standard region for implant fixation of the spine is the pedicle; however, other regions may be more viable options with higher bone quality. ## Methods: Using computed tomography images, the spine was digitally isolated by applying a filter for adult bone. The spine model was separated into 5 lumbar vertebrae, followed by segmentation of each vertebra into 7 regions and determination of average Hounsfield units (HU). HU was converted to BMD with calibration phantoms of known BMD. ## Results: Overall mean BMD in vertebral regions ranged from 172 to 393 mg/cm^3^ with the highest and lowest BMD in the lamina and vertebral body, respectively. Vertebral regions formed 3 distinct groups ( P < .03). The vertebral body and transverse processes represent one group with significantly lower BMD than other regions. Spinous process, pedicles, and superior articular processes represent a second group with moderate BMD. Finally, inferior articular process (IAP) and lamina represent a third gro

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Author

Hohn, Eric A.; Chu, Bryant; Martin, Audrey; Yu, Elizabeth; Telles, Connor; Leasure, Jeremi; Lynch, Tennyson L.; Kondrashov, Dimitriy

Publisher

SAGE Publications; SAGE Publications Inc. (ISSN 2192-5682)

Published

2017

Language

EN

Field

Medicine (Health Sciences)