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Biparietal Thinning: Accidental Death by a Fall from Standing Height.
Robert W Mann1, Masahiko Kobayashi1,2, Alan L Schiller1
1John A. Burns School of Medicine, University of Hawaii, 651 Ilano St., Honolulu, HI, 96813.
Journal of Forensic Sciences
|February 8, 2017
Summary
Biparietal thinning, a rare condition causing parietal bone thinning, presents as depressions. This case highlights increased risk of fatal craniocerebral trauma from falls in affected elderly individuals.
Area of Science:
- Anthropology
- Radiology
- Pathology
Background:
- Biparietal thinning is a rare condition involving symmetrical loss of parietal bone thickness.
- First described in the 18th century, its etiology remains unknown, with varied classifications as a trait, variant, anomaly, or pathology.
Observation:
- The condition manifests as oval-shaped depressions, observed in 0.25-0.8% of individuals grossly and 0.4-0.5% radiographically.
- It occurs more frequently in females over 60 years of age.
Findings:
- Literature review revealed only one prior case of cranial trauma linked to biparietal thinning.
- This report details a rare instance of fatal craniocerebral trauma in an elderly male due to a fall.
Implications:
- This case underscores the heightened vulnerability of individuals with biparietal thinning to severe head injuries.
- It emphasizes the need for increased clinical awareness and protective measures for those with this condition, particularly the elderly.