Quick Answer
Cubital tunnel syndrome is compression or irritation of the ulnar nerve at the inner elbow. Early symptoms are often intermittent numbness or tingling in the little finger and ulnar side of the ring finger. Prolonged elbow flexion or leaning on the elbow can aggravate symptoms.
Symptoms
- Numbness or tingling in the little and ring fingers
- Symptoms when holding a phone or sleeping with the elbow bent
- Reduced grip or fine hand control in advanced cases
- Weakness or wasting of small hand muscles
Diagnosis
History and examination assess sensation, motor function and the ulnar nerve around the elbow. Nerve-conduction/EMG testing can help localize and grade dysfunction. Cervical nerve problems or ulnar compression at the wrist may mimic the condition.
Nonsurgical Treatment
For mild or recent symptoms, reducing direct pressure on the elbow and avoiding prolonged flexion can help. Night positioning or splinting and selected nerve-gliding exercises may be used as part of a therapy plan.
Surgical Treatment
Ulnar nerve decompression may be considered when weakness is significant, nerve findings are progressive, or symptoms persist despite appropriate nonsurgical care. In-situ release and selected forms of nerve transposition are options; no single operation is appropriate for every patient.
Frequently Asked Questions
Will muscle wasting always recover after surgery?
No. With long-standing severe nerve damage, surgery may prevent further deterioration but cannot guarantee complete recovery of established muscle loss.
Can neck problems cause similar numbness?
Yes. Cervical nerve conditions and other compression sites can produce overlapping symptoms.
Sources
Evidence sources checked: 7 August 2026.
This page is for general patient education and does not replace an individual medical examination or treatment plan.