Amputation is the removal of a body extremity by trauma or surgery.
As a surgical measure, it is used to control pain or a disease process in the
affected limb, such as malignancy or gangrene.
In some cases, it is carried out on individuals as a preventative surgery for
such problems. A special case is the congenital amputation, a congenital
disorder, where foetal limbs have been cut off by constrictive.
Ysidro M. Martinez' invention of a below the knee prosthesis avoids some
of the problems associated with conventional artificial limbs.
Martinez, an amputee himself, took a theoretical approach in his design.
He does not attempt to replicate the natural limb with articulated joints in the
ankle or foot which is seen by Martinez as causing poor gait.
His prosthesis has a high center of mass and is light in weight to facilitate
acceleration and deceleration and reduce friction.
The foot is considerably shorter to control acceleration forces, reducing the
friction and pressure.
Amputees are people who have lost a limb or part of a
limb. Your limbs are your arms and legs. Losing a limb or part of a limb can
be the result of illness or injury.
Some people lose limbs in accidents or during a war. In other cases, people
lose limbs as the result of illnesses such as diabetes, cancer and vascular
diseases. If a limb or part of a limb causes great pain or threatens your
health, you may need an amputation - surgical removal.
Some amputees have
phantom pain, which is the feeling of pain in the missing limb.
Other problems that can occur include grief, surgical complications and skin
problems, if you wear an artificial limb. Many amputees use an artificial limb.
Learning how to use it takes time. Physical therapy can help you adapt.
Pistorius wants to be the first amputee runner to compete in the Olympics.
But despite his ascendance, he is facing resistance from track and field’s
world governing body, which is seeking to bar him on the grounds that the
technology of his prosthetics may give him an unfair advantage over sprinters
using their natural legs.
His first strides were choppy Sunday, a necessary accommodation to
sprinting on a pair of j shaped blades made of carbon fiber and known as
Cheetahs. Pistorius was born without the fibula in his lower legs and with
other defects in his feet. He had both legs amputated below the knee when he
was 11 months old. At 20, his coach says, he is like a five-speed engine
with no second gear.
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