Hyoid Bone Fracture
Definition
Fracture of the U-shaped floating hyoid bone at the tongue base; uncommon in hanging (under 10%), more common in strangulation, especially in adults over 40 years when the bone has calcified.
- Bone anatomy
- U-shaped floating bone located at the tongue base, above the larynx.
- Most common in
- Manual strangulation, especially in adults over 40 years old.
- Frequency in hanging
- Under 10% of hanging cases show hyoid fracture.
- Age factor
- The bone fuses and becomes brittle with age, making fracture more likely in older victims.
Common questions
When does a hyoid bone fracture occur?+
Hyoid fracture is uncommon in hanging (under 10% of cases) but more common in strangulation, especially manual strangulation. It occurs most often in victims over 40 years old, when the bone has calcified and becomes brittle with age.
Why is hyoid fracture important in forensic investigation?+
A hyoid fracture can be a key sign of neck compression trauma, whether from strangulation or hanging. Finding one during autopsy helps the pathologist understand the mechanism of death and the force applied.
Is hyoid fracture always present in strangulation cases?+
No. While fracture is more common in strangulation than hanging, it is not always present. Younger victims are less likely to show fracture because their hyoid bone is still flexible and fuses fully only with age.
Related terms
- Complete Hanging
- Hanging in which the body hangs freely with no supporting surface contact. The entire body weight acts through the ligature on the...
- Diatom Test
- A laboratory test for ante-mortem submersion in which bone marrow (from sealed femur diaphysis) is acid-digested and the diatom species identified in...
- Incomplete Hanging
- Hanging in which part of the body (feet, knees, buttocks) remains in contact with a surface. Biomechanically equivalent to complete hanging because...
- Ligature Groove (Hanging)
- The pressure mark left by a ligature on the neck in hanging: pale, parchment-like, oblique, ascending, open at the nape of the...
- Ligature Groove (Strangulation)
- The mark left by a ligature applied with extrinsic force in strangulation: horizontal, complete (encircling the neck), below or at the thyroid...
- Ligature Mark
- The impression left on the neck by a constricting band. Diagnostic features include level (above or below thyroid), direction (oblique vs horizontal),...
- NAME
- National Association of Medical Examiners (US); the professional body that publishes standards for medico-legal autopsy, manner-of-death certification, and forensic pathology training.
- Paltauf's Spots
- Sub-pleural haemorrhagic patches on the lung surface, produced when the alveolar walls rupture under pressure during forced inhalation of water in drowning....
- Parchmentisation
- Post-mortem drying of pressure-blanched skin under a ligature, producing a dry, brown, leather-like band. Characteristic of hanging where the ligature stays in...
- Petechial Haemorrhages
- Pin-point haemorrhages on the conjunctivae, eyelids, face and behind the ears, caused by venous congestion above the level of obstruction. Prominent in...
- Salivary Drool Track
- A dried streak of saliva running from the corner of the mouth downward and toward the suspension point, seen in hanging and...
- Tardieu Spots
- Minute petechial haemorrhages on the surface of visceral organs, pleura, and conjunctivae, produced by venous obstruction and raised intrathoracic pressure in asphyxia....
Explained in these topics
- Asphyxial Deaths: Hanging, Strangulation, Drowning, DiatomsFracture of the U-shaped bone above the larynx. More common in victims over 40 years (the bone fuses with age and becomes brittle). Classic in manual strangula...
- Hanging and Ligature StrangulationFracture of the U-shaped floating hyoid bone at the tongue base; uncommon in hanging (under 10%), more common in strangulation, especially in adults over 40 ye...