Cam Boots are commonly used for stable ankle fractures, post surgery of the foot or ankle, and severe ankle or foot sprains / strains.  Cam Boots come in a variety of styles such as the Air Cam Boots which have an inflatable air bladder that inflates around the ankle area to reduce swelling and pain and provide more immobilization at the same time.  AirCast Cam Boots are cam walker Cam Boots that give the user a more cast-like feel in addition to having the air bladder.  The Air Cast Shell Cam Boots have an additional plastic shell that covers the top part of the foot, ankle, and lower leg area that distributes the pressure from the Velcro harnesses for a more comfortable fit.