Liquid cushions are characterized by which statement?

• A. They are lightest and do not limit shear forces
• B. They are heavier than other options and help limit shear forces
• C. They are always gel-filled and lightweight
• D. They require no maintenance

Answer: (B)

Liquid cushions rely on a fluid-filled bladder, which makes them heavier than many other cushion types. The liquid inside distributes pressure over a larger area, so there aren’t sharp, concentrated loads on one spot. That same fluid movement helps the cushion conform to the body as you shift, reducing localized shear at the skin-seat interface. In short, the extra weight comes from the fluid, and the cushion’s ability to spread pressure and accommodate movement helps limit shear forces. They aren’t typically the lightest option, and they do require ongoing maintenance to monitor the fluid level and seal integrity, so the claim that they are maintenance-free isn’t accurate.