학술논문
Only Small Cement Volumes Are Required to Normalize Stress Distributions on the Vertebral Bodies.
Document Type
Article
Author
Source
Subject
*BIOMECHANICS
*POLYMETHYLMETHACRYLATE
*BONE fractures
*INJECTIONS
*SPINAL cord injuries
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Language
ISSN
0362-2436
Abstract
The article presents a biomechanical study on the influence of injected polymethylmethacrylate (PMMA) cement on fractured and adjacent vertebral bodies, neural arch, and cement leakage. The study was done by inducing fracture to 19 thoracolumbar motion segments from 13 cadavers and by twice injections of PMMA cement in the fractured vertebrae. It reveals the decrease in stiffness of motion segments, intradiscal pressure in adjacent disc, and load-bearing by vertebral body and anterior disc.