People, those who have pain in their backs should be careful in choosing the type of adjustable bed and mattress for sleeping on. There are a number of options to adjust these beds to different positions, this is why the name is "adjustable" bed. These beds are also known as Semi-Fowler beds,and can be operated manually as well as electrically. Patients will get their ultimate comfort by using these adjustable beds. These adjustable beds also come with luxury foam mattresses.