Gait disorders in the elderly are common and in most cases cannot be treated medically or surgically. Therefore, treatment often relies on ambulatory devices such as canes, crutches, and walkers. Before selecting a device, the patient should be evaluated to define whether one or both upper extremities are required to achieve balance or bear weight.
The first living thing to go in space is a dog named Laika a russian dog that captured in moscow when its on space she died a few weeks.
The first space walk: Alexei Leonov, a Soviet cosmonaut, was the first person to step outside of his spacecraft while in space, on March 18, 1965. He spent 12 minutes as he floated as far as 17.5 feet from his Voskhod 2 craft, enjoying the first space walk ever.