ELENKER Knee Walker provides a more reliable and comfortable alternative to crutches for patients needing an effective mobility solution. The steerable economy knee walker delivers one of the best knee walker values in the industry and is ideal for individuals recovering from a broken foot, broken ankle, broken leg, ankle surgery, leg amputation, other lower leg injuries or medical conditions like ulcers. Ideal for indoor and outdoor use, the steerable knee scooter features four 8" wheels.