What is the Ulnar Nerve and Why Is It Important for Function?

The ulnar nerve is one of the major nerves in your arm. It runs from your neck, down your arm, and passes behind the elbow—right through the “funny bone” area.

The ulnar nerve controls:

• Feeling in your ring and pinky fingers

• Muscles that help you grip and move your hand

When the ulnar nerve is compressed or pinched, usually at the elbow (a condition called cubital tunnel syndrome), it can cause:

• Numbness or tingling in your fingers

• Weak grip strength

• Pain in the elbow or forearm

• Muscle loss in severe cases

How Is the Procedure Done?

Ulnar nerve decompression surgery relieves pressure on the ulnar nerve to improve symptoms.

Here’s how the procedure is typically done:

1. Small Incision – A small cut is made along the inner part of the elbow.

2. Freeing the Nerve – The surgeon carefully releases any tight structures that are compressing the nerve.

3. Sometimes the Nerve is Moved – In some cases, the nerve is gently moved to a safer position (called transposition) to prevent future pinching when the elbow bends.

4. Closure and Recovery – The incision is closed with stitches, and a soft bandage is applied.

The surgery is usually done outpatient (you go home the same day) and takes less than an hour.

Why Do People Get This Surgery?

Ulnar nerve decompression is done when:

• Symptoms don’t improve with rest, splints, or physical therapy

• Numbness, pain, or weakness is getting worse

• There’s a risk of permanent nerve damage

This procedure can help restore hand function, reduce discomfort, and get you back to doing the things you enjoy—whether that’s typing, playing sports, or just sleeping comfortably.