Crutches - a device that facilitate the movement of patients with diseases and damages of the lower extremities and spine. The most common are two types of crutches: based on the brush and underarm area or on the hand and forearm.

Crutches: 1 and 2 - based on the brush and the armpit (2 - height adjustment); 3 basing on hand and forearm.

Crutches based on the brush and axillary area (Fig., 1) made from solid wood or metal tubes. Design of crutches made, allowing you to change the height depending on the growth of the patient (Fig., 2).
Every crutch consists of two curly racks that have at the top of the crossbar to the stop in the axilla. Podmyshechnykh covered with felt and leather. In the middle part there is a handle to a brush. The handle can move in a vertical direction and is fixed by a screw in specially drilled hole racks. At the bottom of the rack is connected with base two bolts. Moving legs, you can adjust the height of crutches. For stability and prevent sliding on the floor at the end of the crutch put on the rubber grommet with ribbed surface.
The height of crutches is chosen so that the emphasis rectified when the trunk had a brush and axillary area with a light flexing his arm in the elbow joint. Incorrect height of crutches complicates the movement. Too high crutches RUB the skin in the armpit, and sometimes lead to damage to nerves and blood vessels this area with the development of a "spike" of paralysis or thrombosis axillary vein. At low crutches whole body weight is transferred to the hands, which leads to instability and rapid fatigue.
Crutches based on hand and forearm (Fig., 3) more often made of a metal tube with a strictly individual sizes. The design of such crutches indivisible, each of them has welded horizontal emphasis for the brush and at the upper end of the oval plaque - armrest, which should be at the level of the upper third of the forearm. Armrest and the emphasis for the brush leather. This kind of crutches more convenient for physically strong people and requires good training of the muscles of the hand.