Adaptive seating systems are designed to provide postural support to achieve stable sitting particularly if there is poor muscle control or musculoskeletal misalignment.There is flexion of the hips, knees, and ankles to 90 although if there are contractures or deformity, particularly of the spine, the right angle may not be appropriate.There are different levels of support.First is the planar system, which is a flat seat and back, and the next level is the contoured system.The latter provides improved lateral support.The third level is the custom-molded system, which conforms to the body of the patient.The purpose is to provide support and to relieve pressure.The seat is improved with some lateral contouring and the back si slightly curved for lateral stability.If pelvic stabilization is necessary, a seat belt, either over the thighs or in front of the hips, will help.Additional support may be needed laterally for the legs and the head.
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