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Ulnar Nerve Entrapment

What is the ulnar nerve?

The ulnar nerve is a branch of the brachial plexus nerve system. With help from the median nerve, the ulnar nerve provides sensation to the flexor muscles of the hands and feet, allowing for bending.

What is ulnar nerve entrapment?

Ulnar nerve neuropathy due to ulnar nerve entrapment is often a painful disorder of the outer side of the arm and hand near the little finger, caused by pressure on the ulnar nerve in your arm.

Causes of ulnar nerve entrapment

Ulnar nerve neuropathy can be a condition of nerve entrapment. The ulnar nerve can be constricted as it passes through the wrist or elbow. The ulnar nerve transmits electrical signals to muscles in the forearm and hand. The nerve is responsible for sensation in the fourth and fifth fingers of the hand, the palm, and the underside of the forearm. Ulnar neuropathy can also be called:

  • Bicycler's neuropathy
  • Cubital tunnel syndrome
  • Guyon or Guyon's canal syndrome
  • Tardy ulnar palsy

Symptoms of ulnar nerve entrapment

Symptoms of ulnar nerve neuropathy may include:

  • Weakness or tenderness in the hand
  • Tingling in the palm and fourth and fifth fingers
  • Sensitivity to cold
  • Tenderness in the elbow joint

Diagnosis of ulnar nerve entrapment

Proper diagnosis of ulnar nerve entrapment requires the expert attention of an experienced physician who will determine if the symptom is primary — meaning a stand-alone condition — or if it is secondary, arising out of a more complicated disease like diabetes. Diagnosis will include:

  • A comprehensive clinical exam. Your doctor will ask you to perform certain tasks with your hands so he or she can determine if ulnar nerve entrapment is a possible diagnosis for your pain.
  • Complete medical history
  • Electrodiagnostic studies (EMG) to study nerve conduction within your hands and wrists

Treatment for ulnar nerve entrapment:

Nonsurgical treatment for ulnar nerve entrapment

Depending on the severity of your ulnar nerve entrapment, your physician may recommend the following:

  • Occupational therapy to strengthen the ligaments and tendons in the hands and elbows
  • The daily use of nonsteroidal anti-inflammatory drugs, such as aspirin, ibuprofen, and other nonprescription pain relievers to help reduce pain and inflammation
  • Wearing splints to help immobilize the elbow

Your doctor may recommend surgery to treat your ulnar nerve neuropathy. Learn more about nerve entrapment surgery.

Surgery for ulnar nerve entrapment

When physical therapy and other forms of non-surgical treatment fail, nerve entrapment surgery is the best option to restore function and alleviate pain.

Dr Allan Belzberg is a world-renowned neurosurgeon in the treatment of peripheral nerve injuries. He treats on average 500 nerve injuries every year and has published research publications focusing on improving surgical repairs of nerve injuries and discovering new treatment options.  Catch up on the latest research on nerve injuries.

To make an appointment or request a consultation, contact the Johns Hopkins Peripheral Nerve Surgery Center at 410-614-9923.

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Maryland Patients

To request an appointment or refer a patient, please contact the Johns Hopkins Peripheral Nerve Surgery Center at 410-614-9923.
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Adult Neurology: 410-955-9441
Pediatric Neurology: 410-955-4259
Adult Neurosurgery: 410-955-6406
Pediatric Neurosurgery: 410-955-7337


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