Homeostasis examples include the human body temperature, the glucose level and the ability of the lymphatic system to maintain homeostasis. Homeostasis refers to the ability of an organism or environment to maintain stability in spite of changes.
Cam walkers are often used following foot or ankle surgery or after an injury. These devices help protect the injured area. They provide relative immobilization. They also allow for some limited walking (if this is indicated), and will serve to disperse the force of walking more evenly up the leg, due to the rigid sole and the rounded (rocker-bottom contour) of the sole.
1 Chapman Tools (Durham, CT): midget ratchets and adaptors for Allen, Bristol, Phillips, and TORX fasteners since 1936 to repair and service everything from firearms to appliances, computers to dental equipment.  Craftsman brand hand tools, made for SEARS by Danaher Tool Group, are now a mix of USA-made and imported.