Corrector seats and cushions can prevent and relieve back pain. Use these if you’re in situations where you have to sit for prolonged periods. Having a correct sitting posture is important in the treatment of low back pain. This may include degenerative disc disease, facet syndrome, sciatica, and spinal stenosis. In all of these painful back conditions, it’s important to maintain the natural forward curve of the lower back. This is known as the lumbar lordosis.