Scanning Skeletal Remains for Bone Mineral Density in Forensic Contexts

Area of Science:

• Forensic Anthropology
• Skeletal Biology
• Radiology

Background:

• Bone mineral density (BMD) is crucial for assessing bone quality, nutritional status, and health in both living individuals and skeletal remains.
• Assessing bone quality in skeletal remains is vital for forensic investigations, particularly in cases of suspected malnutrition, neglect, or pathological conditions.
• Traditional methods for evaluating bone quality in skeletal remains have limitations, especially in differentiating causes of death related to nutritional deficiencies.

Purpose of the Study:

• To introduce and validate a novel protocol for utilizing dual-energy X-ray absorptiometry (DXA) in the forensic analysis of skeletal remains.
• To demonstrate the utility of DXA in assessing bone mineral density (BMD) for forensic casework involving juveniles and adults.
• To provide a standardized method for anatomical orientation and analysis of skeletal remains for DXA scanning.

Main Methods:

• Development of a protocol for the anatomical orientation and preparation of skeletal remains for DXA scanning.
• Application of DXA scans to analyze bone mineral density (BMD) in adult and juvenile skeletal samples.
• Integration of DXA findings with traditional forensic anthropological and pathological assessments in case studies.

Main Results:

• Case study 1: DXA indicated normal BMD in an adult with longitudinal fractures, suggesting an alternative etiology for the fractures.
• Case study 2: DXA results, consistent with long bone length analysis, supported a diagnosis of chronic malnutrition in a juvenile.
• Case study 3: DXA revealed low BMD for chronological age in an infant, corroborating autopsy findings of fatal starvation.

Conclusions:

• DXA is a valuable, novel tool for assessing bone quality and nutritional status in forensically relevant skeletal remains.
• DXA can provide critical insights into pathological conditions, nutritional deficiencies (starvation, neglect), and other causes of bone insufficiency in both juveniles and adults.
• Consideration of taphonomic alterations is essential before applying DXA methodology to skeletal remains to ensure accurate interpretation of BMD results.