About cubital tunnel syndrome
The ulnar nerve runs in a groove behind the bony bump on the inside of the elbow, the spot often called the funny bone. In cubital tunnel syndrome, the nerve is squeezed, stretched, or irritated in this space, which disturbs the signals it carries to the hand.
Symptoms are often worse at night, when the elbow stays bent for long periods. Mild cases often improve with simple changes, but ongoing pressure can lead to weakness in the small hand muscles, which should be addressed early.
Common symptoms
- Numbness or tingling in the ring and small fingers
- Symptoms that worsen with the elbow bent, such as on the phone or while sleeping
- Aching on the inside of the elbow
- Clumsiness or a weaker grip and pinch
- Wasting of the small muscles in the hand in more advanced cases
Common causes and risk factors
- Long periods with the elbow bent
- Leaning on the elbow
- A nerve that slides or snaps over the bony bump with movement
- Prior elbow fracture, arthritis, or swelling in the area
- Throwing sports that stretch the nerve
How we diagnose it
Our physicians examine sensation, strength, and the path of the nerve, and check the neck and wrist for other causes. Ultrasound at the exam table measures the nerve, shows where it is compressed, and can reveal a nerve that snaps out of its groove. EMG and nerve conduction testing show how well the nerve is working and how severe the problem is.
How Propel treats cubital tunnel syndrome
Mild cubital tunnel syndrome often improves with simple steps: avoiding long periods of elbow bending, padding the elbow, and a night splint that keeps the elbow straighter. We also guide nerve-friendly exercise so you can keep training and working.
When symptoms persist, Dr. Gruner and Dr. Chen offer ultrasound-guided nerve hydrodissection, which uses fluid to free the nerve from surrounding tissue. An ultrasound-guided PRP injection may also be helpful for nerve recovery. Progressive weakness or muscle wasting in the hand is a sign the nerve needs prompt attention, and we help coordinate a surgical referral when decompression is the right choice. The ultrasound exam we perform is often helpful for the surgeon's planning.
What to expect at your visit
- 1.
We listen first
Your visit opens with a real conversation: how the problem started, what you have already tried, and the activity you want back.
- 2.
Exam and in-office ultrasound
A hands-on exam, then ultrasound at the exam table, often while you move, so your physician can see the tendon, joint, or nerve involved.
- 3.
A clear diagnosis and plan
You leave knowing what is wrong and what your options are, from strength-based rehab to procedures, and why we recommend each one.
- 4.
Treatment and follow-through
Most procedures happen here in the office. We coordinate with your physical therapist and check progress against the goals you set.
Questions about cubital tunnel syndrome
- Is cubital tunnel syndrome the same as carpal tunnel syndrome?
- No. Cubital tunnel syndrome involves the ulnar nerve at the elbow and affects the ring and small fingers. Carpal tunnel syndrome involves the median nerve at the wrist and affects the thumb and first fingers.
- What is nerve hydrodissection?
- Nerve hydrodissection is an office procedure that uses fluid placed under ultrasound to separate a nerve from surrounding tissue that is pressing on it. It can ease symptoms without surgery for some people.
- When should I worry about cubital tunnel symptoms?
- Seek evaluation promptly if you notice weakness, dropping objects, or thinning of the muscles in your hand. These signs suggest the nerve is under more pressure and may need faster treatment.