Traumatic Impact Assessment of CPR Load on a Human Ribcage

Area of Science:

• Biomechanics
• Computational modeling
• Injury assessment

Background:

• Chest compression is vital for assessing injury criteria in human impacts.
• Existing models often lack adaptability to diverse scenarios like vehicle crashes or falls.
• Understanding external compression response is crucial for safety research.

Purpose of the Study:

• To evaluate energy absorbed during human rib compression.
• To develop a parametric model for average human rib size.
• To correlate input payload with numerical stiffness for injury prediction.

Main Methods:

• Utilized data from three computed tomography (CT) studies.
• Interpolated anthropometric values to create a parametric rib curve.
• Developed a numerical model comparing computed results with a virtual rib reconstruction (STL-DICOM®).

Main Results:

• Established a correlation between input payload and numerical stiffness.
• The model accurately reflects thorax displacement and human rib injury mechanics.
• Numerical analyses confirmed the model's validity against virtual reconstructions.

Conclusions:

• The developed model provides a method to quantify energy absorption and stiffness in rib compression.
• This parametric model aids in understanding and predicting injury criteria from various impact scenarios.
• The findings support improved safety designs and injury assessment protocols.