Age related changes in the human plastron: a roentgenographic and morphologic study

Area of Science:

• Forensic Anthropology
• Radiology
• Anatomical Pathology

Background:

• The human plastron (chest plate) undergoes characteristic age-related changes.
• These alterations are observable through roentgenographic (X-ray) imaging.
• Understanding these changes is crucial for forensic age estimation and sex determination.

Purpose of the Study:

• To investigate age-related alterations in the human plastron using X-ray.
• To correlate radiographic findings with gross morphology for age assessment.
• To evaluate the accuracy of X-ray-based methods for age and sex determination.

Main Methods:

• Analysis of roentgenograms from 1965 human cadavers aged 15 years and older.
• Examination of progressive ossification in costal cartilages and sternal rib ends.
• Correlation of radiographic findings with gross bone and cartilage morphology.

Main Results:

• Identified characteristic age-related changes including ossification, bone maturation, contour loss, rib end cupping, osteoporosis, and arthritis.
• Achieved age determination within 5 years of actual age in 55% of cases.
• Attained age determination within 25% of actual age in 95% of cases, with greater variability in individuals over 60.
• Demonstrated 99% accuracy in sex prediction from the same roentgenograms.

Conclusions:

• Roentgenographic examination of the plastron provides a reliable method for forensic age estimation.
• The technique is highly accurate for sex determination.
• Radiographic analysis of chest plate changes offers a valuable tool in forensic science.