Hyoid Bone Fractures in Hanging: Mechanisms and Forensic Significance

The hyoid bone is a small, U-shaped bone in the anterior neck, suspended by ligaments and muscles connecting it to the tongue, larynx, and trachea. In hanging, the body's weight compresses the neck structures against the ligature, often fracturing the hyoid.

Mechanism of Fracture

The force of the body's weight pulls the head downward, concentrating pressure on the hyoid. Because the hyoid is not designed to bear such load, it may fracture—typically at the junction of the body and greater cornua.

Not Universal

Hyoid fractures do not occur in every hanging. Factors influencing fracture include:

• Age and bone density (more common in older adults)
• Type of hanging (full vs. partial suspension)
• Ligature material and position
• Protective clothing or soft tissue padding

An intact hyoid does not exclude hanging as the cause of death; conversely, a fracture strongly supports it but can also result from manual strangulation or trauma.