Article: A Novel Methodology to Estimate Bone Mechanical Properties Using Dual-Energy Imaging to Improve Pedicle Screw Fixation.
Journal of musculoskeletal & neuronal interactions
2023 Volume 23, Issue 3, Page(s) 316–327
Abstract: Objective: To develop a methodology to improve the representation of the mechanical properties of a vertebral finite element model (FEM) based on a new dual-energy (DE) imaging technology to improve pedicle screw fixation.: Methods: Bone-calibrated ... ...
Abstract | Objective: To develop a methodology to improve the representation of the mechanical properties of a vertebral finite element model (FEM) based on a new dual-energy (DE) imaging technology to improve pedicle screw fixation. Methods: Bone-calibrated radiographs were generated with dual-energy imaging technology in order to estimate the mechanical properties of the trabecular bone. Properties were included in regions of interest in four vertebral FEMs representing heterogeneity and homogeneity, as a realistic and reference model, respectively. Biomechanical parameters were measured during screw pull-out testing to evaluate pedicle screw fixation. Results: Simulations with property distributions deduced from dual-energy imaging characterization (heterogeneous models) induced an increase in biomechanical indicators versus with a homogeneous representation, implying different behaviors for the subject-specific models. Conclusion: The presented methodology allows a patient-specific representation of bone quality in a FEM using new DE imaging technology. Consideration of individualized bone distribution in a spinal FEM improves the perspective of orthopedic surgical planning over otherwise underestimated results using a homogeneous representation. |
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MeSH term(s) | Humans ; Pedicle Screws ; Spine ; Cancellous Bone ; Orthopedic Procedures |
Language | English |
Publishing date | 2023-08-31 |
Publishing country | Greece |
Document type | Journal Article ; Research Support, Non-U.S. Gov't |
ZDB-ID | 2041366-X |
ISSN | 1108-7161 |
ISSN | 1108-7161 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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