Cubital tunnel syndrome
What is Cubital tunnel syndrome?
Cubital tunnel syndrome is compression or irritation of the ulnar nerve around the inner side of the elbow. The ulnar nerve supplies sensation to the ring and little fingers and powers many small hand muscles.
Common symptoms
Symptoms include numbness or tingling in the ring and little fingers, symptoms at night, discomfort with prolonged elbow flexion, hand weakness, clumsiness, reduced grip and, in advanced cases, muscle wasting or clawing.
Diagnosis and imaging
Diagnosis combines clinical examination of nerve sensation, strength and irritability with nerve conduction studies. Ultrasound can show nerve enlargement or instability. Imaging may be used if arthritis, previous fracture, deformity or a mass is suspected.
Non-surgical treatment
Early cases may improve by avoiding prolonged elbow flexion and pressure on the inner elbow, using night splints, modifying work habits and treating associated inflammation. Persistent weakness or nerve deterioration needs prompt review.
Surgical treatment
Surgery is considered for ongoing numbness, weakness, muscle wasting, significant nerve test changes or failure of non-surgical treatment. Options include ulnar nerve decompression and, in selected cases, anterior transposition.
Recovery and follow-up
Nerve recovery can be slow. Tingling may improve earlier than strength. Severe or long-standing compression may leave residual symptoms even after adequate decompression, which is why timing matters.
Cubital tunnel syndrome FAQs
Why are my ring and little fingers numb?
Those fingers are supplied by the ulnar nerve. Compression at the elbow commonly causes numbness there, especially when the elbow is bent for long periods.
How is cubital tunnel syndrome diagnosed?
Diagnosis starts with a focused history and examination, then uses imaging selectively to confirm the pattern of injury, exclude related problems and plan treatment accurately.
Can cubital tunnel syndrome become permanent?
Yes. Long-standing compression can cause irreversible nerve damage, muscle wasting and weakness. Progressive symptoms should be assessed early.
Will I need surgery for cubital tunnel syndrome?
Many patients improve without surgery. Surgery is considered when symptoms remain limiting despite appropriate non-surgical care, when there is significant structural damage, or when delay may compromise function.
How long does nerve recovery take?
Recovery may take months. The nerve improves gradually from the point of decompression, and severe cases may not recover fully.
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