Much attention has been given to the motions of and the forces and moments exerted upon the cervical spine during rear-end collisions, often in the interest of understanding so-called whiplash injuries in low-speed collisions and serious or fatal neck injuries in higher speed collisions. In contrast, lumbar spine loads are seldom recorded in rear-end collisions. For example, it has become common to place instrumented anthropomorphic test devices (ATDs) in vehicles during FMVSS 301 Fuel System Integrity rear-end impacts. Since the mid-1990s, upper neck loads have been measured during these tests, and, more recently, lower neck load data have been collected as well [1]. Lumbar spine loads, in contrast, are generally not recorded [1].

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