There are many factors in auto accidents that determine the severity of whiplash and other back injuries. These include:

• Vehicle size: Even when dealing with vehicles of equal size, whiplash can occur in collisions at speeds less than 10mph. Smaller cars generally offer less protection from whiplash injuries due to their light build.
• Vehicle headrests: Ideally, a headrest can help reduce whiplash severity if positioned properly. A headrest that is set too low or too far back from the head at the time of impact can actually increase the damage.
• Victim age: Neck ligaments and muscles become less flexible with age, making them more susceptible to whiplash.
• Seatbelt usage: A seatbelt restrains movement. Proper usage reduces the severity of whiplash.

This list is far from complete. A lawyer negotiating a back injury settlement should have a broad knowledge of all the factors affecting back injuries and whiplash.