Format

Send to

Choose Destination
Proc Inst Mech Eng H. 2014 Jan;228(1):89-97. doi: 10.1177/0954411913513575. Epub 2013 Nov 29.

A parametric finite element analysis of the compacted bone-cement interface following balloon kyphoplasty.

Author information

1
Bioengineering Technology Centre, Institute of Technology Tallaght, Dublin, Ireland.

Abstract

Treating fractures of the spine is a major challenge for the medical community with an estimated 1.4 million fractures per annum worldwide. While a considerable volume of study exists on the biomechanical implications of balloon kyphoplasty, which is used to treat these fractures, the influence of the compacted bone-cement region properties on stress distribution within the vertebral body remains unknown. The following article describes a novel method for modelling this compacted bone-cement region using a geometry-based approach in conjunction with the knowledge of the bone volume fractions for the native and compacted bone regions. Three variables for the compacted region were examined, as follows: (1) compacted thickness, (2) compacted region Young's modulus and (3) friction coefficient. Results from the model indicate that the properties of the compacted bone-cement region can affect stresses in the cortical bone and cement by up to +28% and -40%, respectively. These findings demonstrate the need for further investigation into the effects of the compacted bone-cement interface using computational and experimental methods on multi-segment models.

KEYWORDS:

Kyphoplasty; biomechanics; bone–cement interface; parametric finite element analysis; vertebral augmentation

PMID:
24292010
DOI:
10.1177/0954411913513575
[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for Atypon
Loading ...
Support Center