Cubital Tunnel Syndrome

Q1. What is cubital tunnel syndrome?

Cubital tunnel syndrome is a condition where the ulnar nerve—one of the main nerves in your arm—becomes compressed, stretched, or irritated as it passes through a narrow space called the cubital tunnel on the inner side of your elbow. This pressure on the nerve can cause numbness, tingling, and pain in your elbow, hand, and fingers.

Q2. What nerve is affected in cubital tunnel syndrome, and what does it do?

The ulnar nerve is the nerve affected. It starts in your neck and travels all the way down to your fingers. It is responsible for providing sensation to your ring and pinky fingers. It also controls many of the small muscles in your hand that allow you to grip, pinch, and perform fine movements. At the elbow, this nerve passes close to the bone, often referred to as the "funny bone."

Q3. What are the most common symptoms of cubital tunnel syndrome?

The most common symptoms include:

• Numbness and tingling in the ring and pinky fingers, especially when your elbow is bent.
• A dull ache or pain on the inside of the elbow.
• Weakness in your grip or difficulty coordinating your fingers for tasks like typing or playing an instrument.
• A feeling like your ring and pinky fingers are falling asleep.

Q4. What causes cubital tunnel syndrome or nerve compression at the elbow?

The ulnar nerve is vulnerable to compression because the cubital tunnel has very little padding. Common causes include:

• Keeping the elbow bent for long periods, such as while sleeping or holding a phone to your ear.
• Repeatedly leaning on your elbow on hard surfaces.
• Direct injury or trauma to the inner elbow, such as a blow or fracture.
• Anatomical issues, such as bone spurs, swelling in the joint, or a nerve that slides out of place when the elbow bends.

Q5. Who is at risk for developing cubital tunnel syndrome?

You may have a higher risk of developing this condition if you:

• Work in a job that requires repetitive elbow bending or leaning, such as computer work, driving, or assembly line jobs.
• Sleep with your elbows bent tightly against your chest.
• Have a history of elbow fractures, dislocations, or bone spurs.
• Have conditions that cause nerve irritation or swelling, such as arthritis, diabetes, or thyroid disorders.

Q6. How is cubital tunnel syndrome diagnosed by a doctor?

A doctor will perform a thorough physical exam to check the strength of your hand muscles and the sensation in your fingers. They will check if the nerve is irritated by tapping on it (Tinel's sign) or asking you to bend your elbow for a period of time. They may also order diagnostic tests to confirm the diagnosis and rule out other issues.

Q7. What tests might be ordered to confirm the diagnosis?

Your doctor may recommend:

• Electromyogram (EMG) and Nerve Conduction Studies: These tests measure how fast signals travel down your nerve and check the health of your muscles to find the exact location of compression.
• X-rays: To look for bone spurs, arthritis, or old fractures that could be pinching the nerve.
• Ultrasound or MRI: To see if the nerve is swollen or if there is tissue pressing on it.

Q8. Can cubital tunnel syndrome go away on its own?

In mild or early cases, symptoms may resolve on their own if you change the activities that are irritating the nerve. Simple changes like keeping your elbow straight and avoiding leaning on it can allow the nerve to heal. However, if the nerve has been compressed for a long time, medical treatment or surgery may be needed to prevent permanent damage.

Q9. What are the non-surgical treatment options for cubital tunnel syndrome?

Non-surgical treatments are often the first step and include:

• Activity Modification: Avoiding tasks that require prolonged elbow bending or leaning.
• Elbow Splinting: Wearing a splint or brace at night to keep your elbow straight while you sleep.
• Non-Steroidal Anti-Inflammatory Drugs (NSAIDs): Medications like ibuprofen to help reduce swelling and pain around the nerve.
• Physical or Occupational Therapy: Exercises to help the nerve glide smoothly through the tunnel.

Q10. How does night splinting help, and how do I do it?

Sleeping with your elbow bent tightly puts pressure on the ulnar nerve. A night splint is a brace worn while sleeping that holds your elbow in a straight or slightly bent position. This keeps the cubital tunnel open and reduces tension on the nerve, giving it a chance to rest and heal overnight. If you do not have a formal brace, wrapping a towel around your elbow and securing it with tape or straps can also keep it straight.

Q11. When is surgery recommended for cubital tunnel syndrome?

Surgery is recommended if non-surgical treatments do not relieve your symptoms, or if you have severe symptoms, such as:

• Muscle weakness or wasting (atrophy) in your hand.
• Constant numbness or tingling that does not go away.
• Symptoms that interfere with your daily activities or sleep.
• Evidence of significant nerve damage on an EMG test.

Q12. What does surgery for cubital tunnel syndrome involve?

The goal of surgery is to relieve pressure on the ulnar nerve. The most common procedures are:

• Cubital Tunnel Decompression: The roof of the tunnel (ligament) is cut to make more room for the nerve to pass through.
• Ulnar Nerve Transposition: The nerve is moved out of its tunnel and placed in front of the elbow so it is no longer stretched when you bend your elbow.
• Medial Epicondylectomy: A small part of the bone on the inside of the elbow is removed to prevent the nerve from rubbing against it.

Q13. What should I expect during recovery after cubital tunnel surgery?

Recovery depends on the exact surgery performed. Generally, you can expect:

• You may wear a splint or bandage for a week or two to protect the elbow.
• You will be encouraged to move your fingers and wrist early to prevent stiffness.
• Gentle elbow movement starts after the splint is removed, followed by gradual strengthening.
• Nerve healing is slow, and it may take several months for numbness and tingling to fully resolve.

Q14. Are there exercises or physical therapy that can help with cubital tunnel syndrome?

Yes, physical or occupational therapy can be very beneficial. Therapists teach you "nerve gliding" or "nerve flossing" exercises. These are gentle movements designed to help the ulnar nerve slide smoothly through the cubital tunnel, reducing irritation. Therapy also focuses on strengthening the hand and wrist muscles once the compression is relieved.

Q15. How can I prevent cubital tunnel syndrome from recurring or worsening?

You can protect your ulnar nerve by making a few simple adjustments:

• Avoid keeping your elbows bent for long periods. Use a headset for phone calls and keep computer screens at an ergonomic height.
• Avoid leaning on your elbows, especially on hard surfaces.
• Take frequent breaks to stretch your arms if your work involves repetitive motion.
• Ensure your arms are supported and relaxed while working or resting.

We encourage you to write down any specific questions you have and discuss them thoroughly with your surgeon, doctor, or physical therapist. They are your best resource for personalized advice and care.

Disclaimer: This brochure provides general information and is not a substitute for professional medical advice. Always consult your doctor or qualified healthcare provider with any questions you may have regarding your specific medical condition and treatment plan.