A man jumped from the roof of his house and landed on his feet. This mechanism of injury is an example of what?

A man jumped from the roof of his house and landed on his feet. This mechanism of injury is an example of what?

• A. Axial loading.
• B. Hyperflexion.
• C. Distraction.
• D. Hyperextension.

Answer: (A)

Vertical compressive force along the body's long axis is axial loading. When someone lands on their feet from a height, the impact travels straight up through the legs and spine, compressing tissues along the body's center rather than bending forward, bending backward, or being pulled apart. Hyperflexion would mean excessive forward bending, hyperextension excessive backward bending, and distraction involves forces pulling structures apart. So the mechanism described fits axial loading.

Vertical compressive force along the body's long axis is axial loading. When someone lands on their feet from a height, the impact travels straight up through the legs and spine, compressing tissues along the body's center rather than bending forward, bending backward, or being pulled apart. Hyperflexion would mean excessive forward bending, hyperextension excessive backward bending, and distraction involves forces pulling structures apart. So the mechanism described fits axial loading.