Abstract: A sacral support assembly for use with a seat is provided. The seat includes a seat frame. An adjustable sacral support assembly is connected to the seat frame. The sacral support assembly includes a sacral support member adapted to support the sacrum of a seated user even when an obstruction is located between the user and the sacral support assembly. A method is also provided for delivering primary support to a user's sacrum and sacral-pelvic anatomy and secondary support to the remaining regions of the spine and/or adjacent anatomy to reduce fatigue, increase comfort, structural balance, stability, and posture control for a user, and a system for adjusting and controlling the load distribution from the sacral anatomy to the spine and other anatomical structures adjacent to a user's sacrum, for example, the pelvis, lumbar, thoracic and cervical regions.

Abstract: A cushion for use with a variety of types of seats, for example, automotive seats, to adjust the sacrum thereby pivoting the pelvis to assist in maintaining the spine in equilibrium. The cushion is preferably separate from the seat and has central and end support areas that have a density or compressibility that is greater than that of the interconnecting portions. The central area is also provided with one of a plurality of inserts that individually have varying compressibility so that the compressibility of the central area is variable by changing between the inserts.

Abstract: A sacral support assembly for use with a seat is provided. The seat includes a seat frame. An adjustable sacral support assembly is connected to the seat frame. The sacral support assembly includes a sacral support member adapted to support the sacrum of a seated user. A method is also provided for delivering adjustable, stabilizing support to a user's sacrum and sacral-pelvic anatomy to reduce fatigue, increase comfort, stability and posture for a user, and a system for adjusting and controlling the load distribution from the sacral anatomy to the anatomical structures adjacent to a user's sacrum, for example, the pelvis and lumbar regions.