1964-01-01

The Medical Problem of Lumbar Spine Flattening in Automobile Seats 640788

A scientific medical study of “Alterations of the Lumbar Curve Related to Posture and Seating” has shown that the cause of most postural lower back discomfort and pain when sitting is degeneration and posterior protrusion of lower lumbar intervertebral discs. Sitting at a right angle greatly flattens the lumbar spine curve and increases this disc protrusion. Seats need to be designed to allow more backward inclination of the shoulders and give support over the lower lumbar region. Other requirements for a comfortable and protective seat are presented, with application to automobile seats.

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