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Cubital tunnel release with anterior transposition
Cubital tunnel release with anterior transposition of the ulnar nerve, performed for ulnar nerve entrapment at the elbow (cubital tunnel syndrome) refractory to conservative management. The nerve is decompressed and transposed anteriorly to reduce traction and compression, relieving symptoms and preventing further nerve damage.
At a glance
Anaesthetic
General anaesthetic
Where
The Avenue Hospital
Day case or overnight
Day case - home the same day
First post operative review
Approximately one to two weeks after surgery
Driving
Not for the first one to two weeks, and not until elbow movement and control are comfortable
Post Operative Hand Therapy
Recommended to guide elbow movement and monitor nerve recovery
Splinting
A light dressing or sling for comfort is typically used in the early days; a rigid splint is not generally required
Pain relief
Usually paracetamol and/or ibuprofen; stronger pain relief may be needed initially
Return to repetitive & heavy loading
Light activities within 1-2 weeks; heavier elbow loading usually avoided for 6 weeks
Release and repositioning of the ulnar nerve at the elbow
Cubital tunnel release with anterior transposition is surgery for ulnar nerve compression at the elbow (cubital tunnel syndrome). The nerve is released from surrounding tight tissue and then moved from behind the elbow to a new position in front of the medial epicondyle, to reduce tension and stretching on the nerve during elbow bending.
Who is this procedure for?
- People with more severe or longstanding ulnar nerve compression at the elbow, where a straightforward release alone may not be sufficient
- People whose nerve subluxes (snaps) out of its groove when the elbow bends, which can cause ongoing irritation even after release alone
- People with recurrent symptoms after a previous straightforward decompression
- People with significant deformity or scarring around the elbow affecting the nerve's normal path
What does the surgery involve?
Surgery involves an incision behind the inside of the elbow to identify and release the ulnar nerve from the tight band of tissue forming the roof of the cubital tunnel. The nerve is then carefully mobilised and moved to a new position in front of the medial epicondyle (anterior transposition), where it sits in a looser, less constrained path, and is secured in this new position, either sitting under the skin and fat (subcutaneous transposition) or under the flexor-pronator muscle (submuscular transposition), depending on the surgeon’s assessment.
Alternatives to surgery
Anterior transposition is one option for cubital tunnel syndrome. If you have moderate or severe compression of the nerve on nerve conduction studies it is Dr Tomlinson’s recommended treatment. Depending on your situation, the alternatives may include:
- Non-surgical management: activity modification, night splinting to keep the elbow straight, and avoiding prolonged elbow flexion or leaning on the elbow, appropriate for mild or early symptoms
- Simple in-situ decompression (cubital tunnel release without transposition): release of the nerve without moving it, suitable when the nerve does not sublux and there is no significant deformity – see the separate page on this
What happens if left untreated: untreated, ongoing nerve compression can lead to progressive numbness of the ring and little fingers and weakness of the hand’s small muscles, which may not fully recover if compression is severe or prolonged.
Dr Tomlinson will discuss which options suit your specific situation at your consultation.
Frequently Asked Questions
Where will my surgery be done?
At The Avenue Hospital.
How much time will I need to have away from work?
This depends on what your job involves. Desk-based work is often possible within one to two weeks. Manual work or activities requiring repeated elbow bending are usually deferred for around 6 weeks. Dr Tomlinson will give you advice tailored to your job at your consultation.
When will I be able to drive again?
Multiple things affect this: which hand was treated, whether you’re wearing a bandage, whether you can grip the wheel and respond safely in an emergency, whether you are driving for personal or commercial purposes, the nature of the vehicle you are driving, and your pain levels and medications. You also need to be safely in control of the vehicle for insurance purposes – you should be able to grip the steering wheel strongly with both hands and be able to take evasive action in an emergency before you get behind the wheel. As a guide: plan not to drive for two weeks after the procedure.
When can I do a full day of administrative or desk work?
Often from 2 weeks after surgery, particularly with some temporary adjustments (see below). Keeping your hand elevated and taking regular breaks helps reduce swelling and discomfort in the early days. If you need to drive to work or carry or lift objects as part of your administrative work then alternate or half days may be a prudent measure when first returning to work.
What workplace modifications might help?
Depending on your job, helpful temporary modifications can include:
– Half days or alternate days to begin with
– No heavy lifting
– Lighter duties or being off tools
– More frequent breaks
– Using a headset instead of holding a phone
– Voice-to-text or dictation instead of typing
– Keeping the hand elevated at your workstation
– Avoiding repetitive gripping
– Help with carrying or moving items
– Moving temporarily to reception or phone duties if your role is normally manual
– Protecting the wound if your work exposes your hands to water or contamination (e.g. food handling, healthcare, wet trades)
We’re happy to provide a letter for your employer outlining recommended modifications.
I take a GLP-1 medication (such as Ozempic, Wegovy, Mounjaro or Trulicity) — how does this affect my procedure?
GLP-1 medications, used for diabetes or weight management, slow the emptying of the stomach. This can increase the risk of stomach contents being present during sedation or a general anaesthetic. In line with current ANZCA guidance, if you’re having sedation or a general anaesthetic you’ll be asked to follow a clear-fluid-only diet for 24 hours before your procedure, followed by the standard 6-hour fast. Please tell us and your anaesthetist that you take this medication – your anaesthetist will give you specific instructions.
How long will I need to wear a splint?
A splint or sling is often used in the first one to two weeks mainly for comfort and to protect the transposed nerve while early healing occurs. Rigid splinting is not recommended.
Will I need to see a hand therapist afterwards? May I see one if I'd like?
Hand therapy input is recommended, both to guide safe return to elbow movement and to monitor nerve recovery, which can take longer after transposition surgery than after simple decompression.
What pain medication will I need afterwards?
Usually simple pain relief – paracetamol and ibuprofen – is all that’s needed. Some procedures are more uncomfortable and you may need stronger pain relief. We can always prescribe stronger painkillers if you need them.
Risks & complications
General risks of hand surgery
- Bleeding and bruising; rarely, a collection of blood (haematoma) that may need draining
- Infection, which may require antibiotics or, rarely, further surgery
- Pain — usually temporary, occasionally persistent
- Swelling – common, and usually settles over weeks to months
- Scarring – scars are permanent and occasionally become thickened, raised or sensitive
- Allergic reaction to the local anaesthetic, antiseptic, dressings, tape or suture material
- Delayed or problematic wound healing
- Stiffness or reduced movement in the fingers, hand or wrist
- Injury to nerves, causing numbness, altered sensation or, rarely, a painful neuroma
- Injury to blood vessels (arteries)
- Injury to tendons
- Injury to bone (fracture)
- Failure to fully relieve your symptoms, or symptoms returning over time (recurrence)
- Complex regional pain syndrome (CRPS) – an uncommon but significant condition causing ongoing pain, stiffness and swelling
- Cold intolerance – the hand becoming more sensitive to cold, usually improving with time
- The need for further surgery
- Blood clots in the leg or lung (DVT/PE) – uncommon in hand surgery, with a slightly higher risk after a general anaesthetic or prolonged immobilisation
Specific risks of this surgery
- Haematoma at the surgical site, occasionally requiring drainage
- Numbness or a tender scar from injury to a small sensory nerve (the medial antebrachial cutaneous nerve) that runs through the surgical field
- The nerve settling back toward its original position, or new scarring around it, causing recurrent symptoms
- Incomplete recovery of sensation or strength, particularly if the nerve compression was longstanding or severe before surgery
Anaesthetic
If you are having sedation or a general anaesthetic for this procedure, your anaesthetist will discuss the specific risks of anaesthesia with you separately.
Recovery & rehabilitation
First 48 hours
Keep your elbow still for 48 hours to reduce bleeding and post-operative swelling. Local anaesthetic lasts 6–24 hours (occasionally 1–3 days); your hand will have numb areas during this time.
First week
Keep the dressing dry and intact until your post-operative review. You may use your hand for light activities, but listen to your hand and avoid anything that causes pain, such as lifting or gripping. Scar sensitivity and discomfort with lifting and gripping are expected in the first few weeks. Listen to your elbow and do not perform activities that cause discomfort. You should find that your hand and elbow function is better each day.
Second week
The wound is settling and gentle elbow movement is encouraged. Numbness and tingling may take some time to improve as the nerve recovers, and this is discussed with you before surgery.
6 weeks
Full grip strength may take several months to return, and deep-pressure tenderness over the wound can persist for some months. The scar will feel tight and firm. Massage assists with improving scar mobility and minimising scar firmness.
3 months
The scar firmness will start to resolve after 3 months, and will take up to 12 months to settle.
Long term
Nerve recovery after decompression can be gradual and, for longstanding or severe compression, may be incomplete. Most people can return to full activities by around 6-8 weeks, with nerve-related symptoms continuing to improve for several months afterward.
Want to know more about Cubital Tunnel Release and Anterior Transposition?
Contact us to schedule an appointment with Dr Tomlinson.
Fees and costs
You will receive a written financial quotation after your consultation, once your operation and any third-party requirements are confirmed. See our Fees and informed financial consent page for how our fees work, what your quotation includes, and the resources available to you.