Insect legs

The insect legs will help to create the artificial limbs

The European biologists found out that some insect legs can make movements without reduction of muscles, and studied the mechanism of their work that will allow to create in the future the artificial limbs of hands and feet. By the words of Tom Mateson from Great Britain University even when they removed all muscles from a joint of knee of a locust, the lower part of her shin continued to come back to a starting position. Then they thought that in it muscles in other part of a foot could be guilty, but it continued to move even then when they took away both main muscles of a foot. Mateson and his colleagues tried to understand how work muscles and other parts of feet of grasshoppers and a locust who allow them to jump on distances, in ten times exceeding length of their bodies. Biologists caught several adult individuals of a locust, opened insect legs and compared their structure to extremities of their relatives. Analyzing distinctions in the device of legs, the scientists tried to determine, what contribution to movements of feet is carried out by muscles and other parts of an extremity. It appeared that some movements of insect legs of a locust happened without participation of muscles. So, the foot independently came back to a starting position after jump. According to biologists, it occurred thanks to a special knee joint of a locust which reserved in itself part of the energy developed at extension of a foot by the strongest muscle of a shin, and used it for return of an extremity to a starting position. As the scientists believe, similar architecture of an extremity it is possible to use for creation the artificial limbs of hands and feet, or as a basis for manipulators of robots. According to them, ability to come back to a starting position considerably will simplify a design and will reduce the cost of such devices.