Cubital tunnel syndrome occurs when the ulnar nerve — commonly known as the "funny bone" nerve — becomes compressed or irritated as it passes through a narrow space called the cubital tunnel on the inside of your elbow.
The ulnar nerve travels along your arm to your hand, providing feeling to your ring and pinky fingers and controlling many of the small muscles in your hand. At the elbow, the nerve runs through a groove behind the bony bump (the medial epicondyle), covered by a thin layer of tissue. Unlike other nerves that are protected by muscle and fat, the ulnar nerve is very close to the skin and bone here, making it especially vulnerable to pressure and stretching.
This is why hitting your "funny bone" sends a sharp, tingling shock down your arm — you're actually striking the ulnar nerve against the bone. When this nerve is compressed over time, it can lead to persistent numbness, tingling, and hand weakness that an orthopedic hand specialist can evaluate and treat.
Cubital tunnel symptoms often develop gradually and may come and go at first. Many patients notice them most when the elbow is bent for extended periods, such as while sleeping or talking on the phone.
Several factors can contribute to developing cubital tunnel syndrome. In many cases, it results from repetitive stress or sustained pressure on the ulnar nerve at the elbow.
Diagnosis begins with a thorough clinical examination by your hand and upper extremity surgeon. During the visit, your provider will review your symptoms, medical history, and perform specific physical tests.
In many cases, we can provide a clear diagnosis and treatment plan during your first visit — same-day evaluations are often available.
Many patients with mild to moderate cubital tunnel syndrome improve with conservative care. Andrew Yang, MD discusses non-surgical options when appropriate.
When symptoms persist despite conservative treatment, or when nerve studies show significant compression, surgery may be recommended to reduce the risk of lasting nerve damage.
The "roof" of the cubital tunnel is opened to increase the space around the nerve and relieve pressure. This is typically performed when the nerve compression is mild to moderate and the nerve remains stable in its groove.
In cases where the nerve is unstable or shifting over the bony bump, the nerve is moved from behind the elbow to the front. This prevents the nerve from being repeatedly stretched or caught on bone spurs during elbow movement.
Dr. Andrew Yang is a hand surgeon, board-certified in Orthopaedic Surgery by ABOS, with hand and upper extremity fellowship training. Your care begins with an evaluation and treatment plan.
We believe in straightforward explanations. You'll understand your diagnosis, your options, and what to expect at every step of your treatment.
We always explore non-surgical treatments before recommending surgery. If surgery is needed, we'll explain why and walk you through the entire process.
With offices in Fort Lee, NJ (Bergen County) and Bayside, NY (Queens), hand care is close to home — with same-day evaluations often available.
Hand, wrist, and elbow conditions can overlap in symptoms. If you're experiencing discomfort, these related conditions may also be worth exploring:
Learn more about our full range of orthopedic services.
For selected hand procedures, WALANT uses local anesthesia without general anesthesia or sedation. In many cases, pre-operative fasting or a ride may not be needed; follow the instructions for your specific procedure. Learn about wide-awake hand surgery.
Endoscopic or minimally invasive ulnar nerve release may be an option for selected cases. The suitable approach depends on examination, nerve testing, and the nerve's position.
Surgery may be discussed when symptoms continue despite non-surgical care, nerve testing shows significant compression, or weakness is progressing. Examination and testing help guide timing and approach.
This is general information; results and recovery vary.
OrthoMD accepts Medicare, workers' compensation, auto insurance, and most major plans. Coverage varies by plan and service. Call (917) 242-4585 with questions about coverage.
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