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Updated: Sep 3, 2025

3D Printing Model of a Patient's Specific Lumbar Vertebra
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Patient-Specific Finite Element Modeling of the Whole Lumbar Spine Using Clinical Routine Multi-Detector Computed

Nithin Manohar Rayudu1, Karupppasamy Subburaj1,2, Rajesh Elara Mohan1

  • 1Engineering Product Development (EPD) Pillar, Singapore University of Technology and Design (SUTD), Singapore 487372, Singapore.

Biomedicines
|July 27, 2022
PubMed
Summary
This summary is machine-generated.

Finite element (FE) models of the whole lumbar spine can be developed from routine CT scans to predict failure load (FL). FE-derived FL shows potential for identifying osteoporotic fracture risk, unlike range of motion (ROM) parameters.

Keywords:
bone mineral densityfinite element analysismulti-detector computed tomographyosteoporosisrange of motionspinevertebral fracture

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Area of Science:

  • Biomechanics
  • Medical Imaging
  • Computational Modeling

Background:

  • Finite element (FE) models are crucial for understanding lumbar spine mechanics.
  • Clinical routine multi-detector computed tomography (MDCT) scans offer a potential data source for patient-specific modeling.

Purpose of the Study:

  • To assess the feasibility of creating whole lumbar spine FE models from MDCT scans.
  • To predict failure load (FL) and range of motion (ROM) parameters using these models.
  • To correlate FE-derived parameters with bone mineral density (BMD) and compare healthy controls (HC) with osteoporotic patients (OP).

Main Methods:

  • Generation of comprehensive FE models (L1-L5) from MDCT scans of 12 subjects (6 HC, 6 OP).
  • Simulation of lumbar spine models to determine FE-based FL and ROM.
  • Calculation of correlation coefficients between FE parameters and BMD (BMDQCT-L1-3).
  • Statistical analysis (Mann-Whitney U tests) to compare HC and OP cohorts.

Main Results:

  • FE-based FL was significantly higher in HC than OP (p < 0.01).
  • A strong positive correlation (ρ=0.8, p < 0.01) was found between FE-based FL and BMDQCT-L1-3.
  • No significant differences in ROM parameters were observed between HC and OP cohorts (p > 0.13 for all movements).
  • No significant correlations were found between ROM parameters and BMDQCT-L1-3.

Conclusions:

  • Patient-specific FE models of the entire lumbar spine are feasible using routine MDCT data.
  • ROM parameters do not appear to be significantly altered between healthy and osteoporotic individuals.
  • FE-derived FL shows promise for identifying individuals at increased risk of osteoporotic fractures.