Ulnar nerve decompression at the elbow is a procedure to relieve pressure on the ulnar nerve as it passes through the cubital tunnel on the inner side of the elbow. This nerve is responsible for sensation in the ring and little fingers and powers many of the small muscles in the hand.
An incision is made on the inner side of the elbow. The ulnar nerve is identified and the tight structures compressing it are released. In some cases, the nerve is moved (transposed) to a new position in front of the elbow to prevent it from being stretched during bending. The procedure typically takes 30–60 minutes.
Surgery is recommended when cubital tunnel syndrome causes persistent or worsening numbness and tingling in the ring and little fingers, hand weakness, or difficulty with fine movements, and has not responded to non-operative management. It is particularly important when nerve conduction studies show significant compression or when there is muscle wasting in the hand.
Night-time elbow splinting to prevent prolonged bending, activity modification, avoidance of prolonged elbow leaning, and nerve-gliding exercises. These measures may be effective for mild cases.
Standard pre-assessment. This is usually a day-case procedure. Plan for limited use of the hand for a week or two after surgery.
The aim is to prevent further nerve damage and relieve symptoms. Tingling and pain usually improve relatively quickly. Numbness may take weeks to months to improve, and recovery is more complete when surgery is performed before symptoms become severe. In advanced cases, some residual numbness or weakness may persist.
The incision site may be tender, particularly when leaning on the elbow. This usually settles.
Numbness and weakness may not fully resolve, especially if nerve compression was long-standing.
Pain and swelling around the elbow in the early weeks.
Paradoxical worsening of symptoms or new nerve damage is rare but possible.
If the nerve was released but not transposed, it may slip in and out of the groove.
Wound infection, usually manageable with antibiotics.
Temporary limitation of movement.
Usually performed under general anaesthesia or regional arm block. Local anaesthesia may also be used in some cases.
A bulky dressing or light splint is applied for the first week. Gentle finger and wrist movements are encouraged immediately. The dressing is reduced and sutures removed at 10–14 days. Most patients return to light activities within two weeks and to full duties within four to six weeks. Heavy manual work may take longer.
Wound review and suture removal at 10–14 days. Follow-up with the surgeon at six weeks. Nerve recovery is monitored over the following months.
Improvement in tingling and pain may be noticed within days. Numbness in the fingers can take weeks to months. Muscle weakness may take longer and may not fully recover if compression was severe.
Yes. The ulnar nerve runs behind the medial epicondyle — the 'funny bone' — and is responsible for the electric shock sensation when you knock this area.
Avoiding prolonged elbow leaning and keeping the elbow from bending fully for long periods (such as during sleep) can help prevent recurrence.