Pinched Nerve in the Elbow (Cubital Tunnel Syndrome): Symptoms, Causes & PT Treatment
Updated July 20261 minute read
Cubital tunnel syndrome is compression of the ulnar nerve behind the inner elbow — the "funny bone" nerve — causing tingling and numbness in the ring and pinky fingers, often worse when the elbow is bent for a while (like holding a phone or sleeping). Mild-to-moderate cases often improve with avoiding prolonged bending, splinting, and nerve exercises. Constant numbness or hand-muscle wasting and weakness is more serious and needs prompt medical evaluation.
What is cubital tunnel syndrome?
The ulnar nerve passes through a tunnel behind the inner elbow. Pressure or repeated stretch there causes the symptoms.
Symptoms
Common features are tingling and numbness in the ring and pinky fingers, an aching inner elbow, symptoms worse with a bent elbow (phone, sleeping), and — in more advanced cases — grip weakness or hand-muscle wasting.
What causes it / risk factors
Prolonged or repeated elbow bending, leaning on the elbow, prior elbow injury, and individual anatomy contribute.
How it's diagnosed
A clinician uses your symptom pattern and tests; nerve studies help confirm and grade more significant cases.
Physical therapy treatment
What a PT does. Your therapist reduces nerve compression and stretch (positioning, night splinting), and uses nerve-gliding exercises. Exercises & progression (overview). Avoiding prolonged elbow flexion and leaning, a night splint to keep the elbow straighter, and ulnar nerve gliding. Conservative care helps many mild-to-moderate cases. Recovery timeline. Mild cases may improve over weeks; results vary by severity.
Treatment options compared
Activity changes and splinting are first-line for milder cases. Surgery (to release or move the nerve) is considered for moderate-to-severe cases, constant numbness, or muscle wasting.
Red flags
Constant numbness, hand-muscle wasting, or significant weakness needs prompt medical evaluation, as nerve damage can become permanent.
Frequently asked questions
Sources (2)
- AAOS OrthoInfo: Ulnar Nerve Entrapment at the Elbow (Cubital Tunnel Syndrome). — AAOS OrthoInfo
- MedlinePlus: Ulnar nerve dysfunction. — NIH/MedlinePlus
This article is for education only and isn't medical advice. Always talk to a licensed clinician about your specific situation.