Radial nerve dysfunction is a problem with the movement or sensation of the back of the arm (triceps), forearm, or hand.
Alternative NamesNeuropathy - radial nerve; Radial nerve palsy
Causes, incidence, and risk factorsRadial nerve dysfunction is a form of peripheral neuropathy. It occurs when there is damage to the radial nerve, which travels down the arm and controls movement of the triceps muscle at the back of the upper arm. It also controls extension of the wrist and helps in the movement and sensation of the wrist and hand.
Dysfunction of a single nerve group (such as the radial nerve) is called mononeuropathy (mono means "one," and neuropathy means "nerve damage"). With mononeuropathy, usually the nerve damage is caused locally. However, systemic disorders (such as mononeuritis multiplex) may occasionally cause nerve damage.
Causes include:
These factors may be complicated by a lack of oxygen from decreased blood flow (ischemia) in the area.
In some cases, no cause can be found.
SymptomsSymptoms can affect the following:
The following symptoms may occur:
The health care provider will take a history of your activities and injuries. An examination of the arm, hand, and wrist may identify radial nerve dysfunction.
The exam may find:
In rare cases, it may be difficult to tell radial nerve dysfunction apart from a stroke.
Tests for nerve dysfunction may include:
The goal of treatment is to maximize your ability to use the hand and arm. The health care provider should find and treat the cause appropriately. In most cases, no treatment is needed and you will recover slowly on your own.
Surgery to remove masses that press on the nerve may help.
CONTROL OF SYMPTOMS
Medications may include:
Whenever possible, avoid or minimize your use of medications to reduce the risk of side effects.
Other treatments include:
Occupational therapy, or job counseling, changes, or retraining may be recommended as appropriate.
Expectations (prognosis)If the cause of the nerve dysfunction can be found and successfully treated, there is a possibility that you will fully recover. Disability can range from none to partial or complete loss of movement or sensation.
Nerve pain may be uncomfortable and may last for a long period of time. If this occurs, see a pain specialist to ensure you have access to all pain treatment options.
ComplicationsCall your health care provider if you have had an injury to the arm, and you develop numbness, tingling, or weakness.
PreventionPrevention varies depending on the cause. Avoid prolonged pressure on the upper arm.
radial nerve !
radial artery
Posterior interosseus nerve, one of the two terminal branches of Radial and the Radial itself (it supply only one muscle)
radial nerve
The radial artery
Radial Artery
The supinator muscle is primarily innervated by the radial nerve, specifically the deep branch of the radial nerve. This nerve provides the necessary motor function to facilitate the supination of the forearm. Additionally, the radial nerve branches may also receive contributions from the posterior interosseous nerve, which is a continuation of the deep branch.
The supinator muscle is primarily innervated by the radial nerve. Specifically, the deep branch of the radial nerve, which branches off the radial nerve in the forearm, provides the motor innervation necessary for the supinator to function. This muscle is responsible for supinating the forearm, allowing for the rotation of the palm to face upward.
The Radial Nerve.
The radial nerve is the nerve that runs from the shoulder to the wrist. This nerve is sometimes referred to as the funny bone because of its placement. If the elbow is bumped in just the right place, it can cause a very funny sensation in the hand and arm.
The median nerve, supplies the lateral half of the arm, up to 1/2 of the fourth(ring) finger, while the ulnar nerve supplies the medial side of the arm, up to the pinky finger and the other 1/2 of the ring finger
Radial