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Sex determination from chest plate roentgenograms
American Journal of Physical Anthropology
|October 1, 1985
Summary
Forensic sex determination from adult chest plates is highly accurate (97-99%) using ossification patterns and simple measurements. This cost-effective method provides a permanent record for identification.
Area of Science:
- Forensic Anthropology
- Osteology
- Radiology
Background:
- Accurate sex determination is crucial in forensic anthropology and archaeology.
- Traditional methods may be destructive or require intact skeletal remains.
- Non-invasive techniques for sex estimation are valuable in forensic casework.
Purpose of the Study:
- To develop and validate a rapid, accurate, and inexpensive method for sex determination using adult chest plates.
- To assess the predictive value of costal cartilage ossification patterns and sternal metrics.
- To establish an empirical algorithm for chest plate sexing.
Main Methods:
- Evaluation of over 1100 chest plate roentgenograms from an adult decedent population.
- Analysis of costal cartilage ossification patterns.
- Measurement of fourth rib width, corpus width, sternal length, and sternal area.
- Development of an algorithm incorporating measurements and derived indices (sternal length and area indices).
Main Results:
- Achieved 97% to 99% accuracy in sex determination of adult chest plates.
- Identified highly predictive ossification patterns and metric determinations.
- Demonstrated the efficacy of the developed algorithm.
Conclusions:
- Chest plate analysis offers a precise and reliable method for sex determination.
- The technique is easy, rapid, inexpensive, and yields a permanent record.
- This method is a valuable tool for forensic identification and anthropological studies.