Has anyone used a convoluted ("egg crate") mattress cover? I read many testimonials (ratings) on various sites about how helpful they are whether the rater had back problems, hip problems, or fibromyalgia. So I bought one. I just made up my bed with it, and we'll see tonight (er, tomorrow morning) how well it works.
I have spinal stenosis, DDD, 2 herniated discs (not impinging on nerves), osteoarthritis, and fibromyalgia.