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Computed Tomography

Computed Tomography

Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
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Updated: May 5, 2026

A Method to Estimate Cadaveric Femur Cortical Strains During Fracture Testing Using Digital Image Correlation

A Method to Estimate Cadaveric Femur Cortical Strains During Fracture Testing Using Digital Image Correlation

Published on: September 14, 2017

A generalized objective CT-based method for quantifying articular fracture severity.

Kevin N Dibbern¹, Andrew M Kern², Donald D Anderson³

¹Department of Orthopedics and Rehabilitation, The University of Iowa, United States; Department of Biomedical Engineering, The University of Iowa, United States; Department of Biomedical Engineering, Marquette University, United States.

Journal of Biomechanics

|January 8, 2025

Summary

This summary is machine-generated.

A new CT-based method objectively assesses fracture severity, reducing analysis time and improving clinical utility. This advanced technique enhances fracture assessment for various joints and bones, aiding in predicting post-traumatic osteoarthritis risk.

Keywords:

Fracture energy Fracture severity Post-traumatic OA

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Last Updated: May 5, 2026

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Published on: September 14, 2017

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Area of Science:

Orthopedic surgery
Biomechanical engineering
Radiology

Background:

Current fracture classification systems lack reliability.
Previous CT-based methods for fracture severity assessment were time-consuming and required contralateral scans.
Objective fracture assessment is crucial for reliable treatment planning.

Purpose of the Study:

To develop and validate an improved CT-based method for objective fracture severity assessment.
To reduce analysis time and eliminate the need for contralateral CT scans.
To introduce new metrics for evaluating articular fracture severity and predicting post-traumatic osteoarthritis (PTOA).

Main Methods:

Quantified fracture energy using CT imaging.
Developed novel metrics: articular fracture edge length and subchondral energy.
Validated the method on 20 tibial pilon fractures and analyzed radiographic grading for PTOA development.

Main Results:

The improved method significantly reduced analysis time to <2 hours.
Fracture energies showed strong agreement (R² = 0.95, p < 0.001) with prior results.
New metrics and fracture energy were significantly different (p < 0.01) between cases with and without PTOA.

Conclusions:

The enhanced method provides a reliable, efficient, and generalized approach to assessing fracture severity in various joints and bones.
This method can be applied to larger populations and clinical timeframes, offering insights into PTOA risk.
The generalized assessment method has the potential to transform fracture treatment algorithms and guide future research.