ARM WEAKNESS
The arm is generally designed to withstand much abuse. Some parts are still very fragile. Quite often a weakness in the upper arm caused by a kind of internal contraction. There may be a point between the neck and fingertips, a nerve or blood vessel is compressed, it can also be the area between the neck muscles and shoulder.

Blood flow to the infected area is often reduced to a trickle and it may be that the endings of nerves of the arm can no longer transmit signals to the brain at full capacity, which creates a sensation of numbness or weakness.

These nerve injuries have many names – a syndrome of thoracic cervicobrachial (if compression is somewhere between the shoulder and neck), ulnar nerve compression (more specifically the elbow down) and the syndrome carpal tunnel (wrist and hand) – but they all have one thing in common.

It affects the nerves (and sometimes the arteries) which extend along the arm from the neck down. Another injury compression, often overlooked, is an ulnar neuropathy, which can occur where the ulnar nerve, which passes under the elbow is injured, producing numbness and tingling in the hand and a sore elbow.

People who lie on hard surfaces sometimes develop this problem. Cyclists often complain of loss of sensation in the fingers. Having to stand on their handlebars with their hands puts excessive pressure on the ulnar nerve, a condition known as cubital tunnel syndrome.

These injuries are usually caused as a result of repetitive movements of the arm for many weeks or even years. For example, electricians, who use a repetitive motion while using their screwdriver and wire stripper, are likely to have a tendon injury elbow.
All those who are abused tendons, ligaments and muscles are generally good and strong. They will swell and invade the nerves closest. These injuries occur at the elbow, wrist and shoulder, but they also weaken the forearm and upper arm.

TREATMENT
Treatment depends on the diagnosis. Give new strength to an arm damaged may require care as benign a little rest and then require surgery. That is what to do:

• Call to specialists. If there is nerve compression, the first thing to determine is its degree of seriousness. It immediately sends some patients for surgery, particularly if symptoms persist. But we usually start in a more moderate relax until symptoms subside, use of splints, and in some cases, make cortisone injections to reduce inflammation.
• Submit it to the test. It may be that your doctor asks you to undergo a series of tests to determine where the nerve has been touched, while others such tests measure your level of force to tighten or you will move the injured joint or the member to determine the degree of weakness.
• Go back to school. You can benefit from rehabilitation course taught by a physiotherapist who will teach you how to do your job, or your favorite sport, with less tension in the arm. For example, lowering the saddle of your bicycle and wearing fur-lined gloves, you can avoid the cubital tunnel syndrome. Special armrests relieve pressure on your elbows; you will avoid the ulnar neuropathy. It is preferable not to wait and treat these injuries more quickly. Over time, a nerve injury may become so damaged that it will be impossible to treat.
• This would result in permanent weakness. Even if you later try to restore with surgery, you will not ever fully recoup. What doctors really prefer is to prevent this problem from becoming a disability.