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Individualized prediction of pedicle screw fixation strength with a finite element model
- Source :
- Computer methods in biomechanics and biomedical engineering. 23(4)
- Publication Year :
- 2020
-
Abstract
- Pedicle screws are used for the treatment of a wide variety of spinal pathologies. A good screw holding power in bone is required for treatment success, but has so far not been predictable computationally. The goal of this study was to develop an automated tool able to predict patient-specific screw fixation strength through finite element simulation. We compared the simulation results with results from biomechanical pull-out tests performed on animal lumbar specimens. Experimental and simulation pull-out strengths were highly correlated [Formula: see text] and the mean error was 20.25%. The fixation strength was also associated to great extent with pull-out stiffness and strain energy, as well as the screw size and mean vertebral density.
- Subjects :
- musculoskeletal diseases
Mean squared error
0206 medical engineering
Finite Element Analysis
Biomedical Engineering
Bioengineering
02 engineering and technology
Models, Biological
Finite element simulation
03 medical and health sciences
Fixation (surgical)
0302 clinical medicine
Lumbar
Pedicle Screws
medicine
Animals
Computer Simulation
Pedicle screw fixation
Pedicle screw
Mathematics
Lumbar Vertebrae
Stiffness
030229 sport sciences
General Medicine
equipment and supplies
020601 biomedical engineering
Finite element method
Computer Science Applications
Biomechanical Phenomena
Human-Computer Interaction
Linear Models
Cattle
Stress, Mechanical
medicine.symptom
Biomedical engineering
Subjects
Details
- ISSN :
- 14768259
- Volume :
- 23
- Issue :
- 4
- Database :
- OpenAIRE
- Journal :
- Computer methods in biomechanics and biomedical engineering
- Accession number :
- edsair.doi.dedup.....dd1b53f2847355c4a8b3b3d4f4e13101