Radial Nerve Palsy

Radial nerve

The radial nerve runs down the length of the arm. It controls movement of the triceps muscle at the back of the upper arm. It also controls movement and feeling in the wrist and hand.

Radial nerve palsy

Radial nerve palsy is caused by damage to the radial nerve. Symptoms of wrist drop include:

• Weakness of the wrist and fingers
• Inability to straighten the wrist or fingers
• Numbness or tingling of the hand

Injury to the radial nerve may be caused by:

• Direct blow to the nerve
• Cut or other wound that affects the nerve
• Fracture of the arm or elbow 
• Unrelieved pressure on the radial nerve (from things such as sleeping with the arm trapped under the body)
• Injury that results in swelling around the nerve
• Use of crutches resulting in compression of on the nerve
• Long-term constriction of the wrist (for example, from a tight watch or bracelet)
• Repetitive twisting motions of the forearm

In some cases, no cause can be found. The treatment depends on the cause of the nerve damage. In some cases, the problem will go away on its own once pressure to the nerve is relieved. Splinting the wrist to limit movement may help with healing. If the problem is due to trauma or injury, physical therapy may be prescribed.  

Corticosteroids injections into the area may reduce swelling and pressure on the nerve. Surgery to repair the nerve may be needed for chronic symptoms that do not respond to simpler treatments. Ask your healthcare provider about what treatment options are right for you.

Home care

• Rest the wrist and arm until normal feeling and strength return.
• If you were given a splint or sling, wear it as directed.
• Avoid positions leaning on your elbows.
• If medicines were prescribed for pain or nerve sensations, take them as directed.

Follow-up care

• Follow up with your healthcare provider or as advised by our staff.