Ulnar nerve dysfunction

Ulnar nerve dysfunction is a problem with the nerve that travels from the shoulder to the hand, called the ulnar nerve. It helps you move your arm, wrist, and hand.

Causes

Damage to one nerve group, such as the ulnar nerve, is called mononeuropathy . Mononeuropathy means there is damage to a single nerve. Both local and body-wide disorders may damage just one nerve.

Mononeuropathy

Mononeuropathy is damage to a single nerve, which results in loss of movement, sensation, or other function of that nerve.

Image

 

Read Article Now Book Mark Article

Causes of mononeuropathy include:

• An illness in the whole body that damages a single nerve
• Direct injury to the nerve
• Long-term pressure on the nerve
• Pressure on the nerve caused by swelling or injury of nearby body structures

Ulnar neuropathy is also common in those with diabetes.

Ulnar neuropathy occurs when there is damage to the ulnar nerve. This nerve travels down the arm to the wrist, hand, and ring and little fingers. It passes near the surface of the elbow. So, bumping the nerve there causes the pain and tingling of "hitting the funny bone."

When the nerve compressed in the elbow, a problem called cubital tunnel syndrome may result.

When damage destroys the nerve covering ( myelin sheath) or part of the nerve itself, nerve signaling is slowed or prevented.

Myelin

Myelin is an insulating layer, or sheath that forms around nerves, including those in the brain and spinal cord. It is made up of protein and fatty ...

Image

 

Read Article Now Book Mark Article

Damage to the ulnar nerve can be caused by:

• Long-term pressure on the elbow or base of the palm
• An elbow fracture or dislocation

  Fracture

  If more pressure is put on a bone than it can stand, it will split or break. A break of any size is called a fracture. If the broken bone punctures...

  

  Image

   

  Read Article Now Book Mark Article

  Dislocation

  A dislocation is a separation of 2 bones where they meet at a joint. Joints are areas where 2 bones come together. A dislocated joint is a joint whe...

  

  Image

   

  Read Article Now Book Mark Article

In some cases, no cause can be found.

Symptoms

Symptoms may include any of the following:

• Abnormal sensations in the little finger and part of the ring finger, usually on the palm side
• Weakness , loss of coordination of the fingers

  Weakness

  Weakness is reduced strength in one or more muscles.

   

  Read Article Now Book Mark Article
• Clawlike deformity of the hand and wrist
• Pain, numbness , decreased sensation, tingling, or burning sensation in the areas controlled by the nerve

  Numbness

  Numbness and tingling are abnormal sensations that can occur anywhere in your body, but they are often felt in your fingers, hands, feet, arms, or le...

  

  Image

   

  Read Article Now Book Mark Article

Pain or numbness may awaken you from sleep. Activities such as tennis or golf may make the condition worse.

Exams and Tests

The health care provider will examine you and ask about your symptoms and medical history. You may be asked what you were doing before the symptoms started.

Tests that may be needed include:

• Blood tests
• Imaging tests to view the nerve and nearby structures
• Nerve conduction tests to check how fast nerve signals travel

  Nerve conduction tests

  Nerve conduction velocity (NCV) is a test to see how fast electrical signals move through a nerve.

  

  Image

   

  Read Article Now Book Mark Article
• Electromyography ( EMG ) to check the health of the ulnar nerve and the muscles it controls

  EMG

  Electromyography (EMG) is a test that checks the health of the muscles and the nerves that control the muscles.

  

  Image

   

  Read Article Now Book Mark Article
• Nerve biopsy to examine a piece of nerve tissue (rarely needed)

  Nerve biopsy

  A nerve biopsy is the removal of a small piece of a nerve for examination.

  

  Image

   

  Read Article Now Book Mark Article

Treatment

The goal of treatment is to allow you to use the hand and arm as much as possible. Your provider will find and treat the cause, if possible. Sometimes, no treatment is needed and you will get better on your own.

If medicines are needed, they may include:

• Over-the-counter or prescription medicines
• Corticosteroid injections around the nerve to reduce swelling and pressure

Your provider will likely suggest self-care measures. These may include:

• A supportive splint at either the wrist or elbow to help prevent further injury and relieve the symptoms. You may need to wear it all day and night, or only at night.
• An elbow pad if the ulnar nerve is injured at the elbow. Also, avoid bumping or leaning on the elbow.
• Physical therapy exercises to help maintain muscle strength in the arm.

Occupational therapy or counseling to suggest changes in the workplace may be needed.

Surgery to relieve pressure on the nerve may help if the symptoms get worse, or if there is proof that part of the nerve is wasting away.

Outlook (Prognosis)

If the cause of the nerve dysfunction can be found and successfully treated, there is a good chance of a full recovery. In some cases, there may be partial or complete loss of movement or sensation.

Possible Complications

Complications may include:

• Deformity of the hand
• Partial or complete loss of sensation in the hand or fingers
• Partial or complete loss of wrist or hand movement
• Recurrent or unnoticed injury to the hand

When to Contact a Medical Professional

Call your provider if you have an arm injury and develop numbness, tingling, pain, or weakness down your forearm and the ring and little fingers.

Prevention

Avoid prolonged pressure on the elbow or palm. Casts , splints, and other appliances should always be examined for proper fit.

Casts

Urinary casts are tiny tube-shaped particles that can be found when urine is examined under the microscope during a test called urinalysis. Urinary c...

Image

 

Read Article Now Book Mark Article