To be effective and prevent whiplash, at what distance should the headrest be positioned from the head?

Question

DentroTest · Accepted Answer

The correct answer is the minimum possible, without exceeding 4 cm. The headrest is a passive safety feature designed to limit neck movement in the event of a rear-end collision. If the distance is greater than 4 cm, upon impact, the head would travel too far back before being stopped, causing severe neck hyperextension known as 'whiplash'. Therefore, it should not be adjusted for comfort, but for safety, keeping it as close as possible to the back of the head and adjusting its height so that the center of the headrest aligns with the height of the eyes.

To be effective and prevent whiplash, at what distance should the headrest be positioned from the head?

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