When choosing a mattress for a person with limited mobility, it is important to understand the importance the mattress plays in that person's health, particularly of the skin. Bed sores can quickly form when prolonged pressure between the body and the mattress impedes blood flow to the skin. Without proper blood flow, the skin will breakdown. For those with limited mobility, preventing bed sores via a mattress that helps redistribute pressure is essential. How does one determine if a memory foam mattress or alternating pressure mattress is most appropriate?