Nerve Repair Surgery: Rejoining a Cut Nerve in the Hand, Arm or Leg

What Is Nerve Repair Surgery?

Nerve repair surgery rejoins a limb nerve torn by a cut, crush or stretch. Under a microscope, the surgeon trims the damaged ends and lines up the fiber bundles. Then fine stitches hold them, so new fibers can grow back toward muscle and skin.

Most of these injuries affect the hand, wrist, forearm or leg. For example, a kitchen knife or broken glass can cut a finger nerve or, deeper, the median nerve at the wrist. Fractures and machinery also tear nerves.

However, a nerve that is completely cut does not reconnect on its own. Therefore, the timing of the repair shapes how much feeling and strength come back.

At a Glance

• What it treatsA cut, crushed or scarred nerve in the hand, arm or leg
• Main methodsDirect stitching, a nerve graft, a nerve tube or a nerve transfer
• Best timingClean cuts within days; crushed or dirty wounds after two to three weeks
• Key testsCareful exam, nerve ultrasound, EMG and nerve conduction studies
• Regrowth speedRoughly one millimetre a day, about an inch a month
• After surgeryA splint for a few weeks, then hand therapy or physiotherapy for months

Where Are You in Your Decision?

Pick the line that sounds most like you. Each one then opens the matching part of this guide.

1. 01I have just cut my hand, arm or legWhat to do today, before any planning→
2. 02I do not know if my nerve is cut or only bruisedInjury types, symptoms and the tests that tell them apart→
3. 03I want to know when surgery should happenThe timing window for each kind of injury→
4. 04I want to compare repair, graft and transferWhich method fits which gap and delay→
5. 05I want to know how long recovery takesSplint, therapy and the months of regrowth→
6. 06I am planning a delayed repair abroadRecords to bring, length of stay and flights→

When Is a Nerve Injury an Emergency?

First, a fresh wound with heavy bleeding needs your nearest emergency department. So never delay this care to plan a trip abroad.

Also, ask the emergency team to check the nerve before they close a wound. A numb finger after a cut deserves more than skin stitches, because early detection gives the best start.

Is the Nerve Cut, Bruised or Stretched?

Not every nerve injury needs surgery. So doctors grade the damage, often with the Seddon and Sunderland scales. The grade then decides between waiting and operating.

Which Nerve, Which Symptom

Each nerve feeds certain muscles and skin, so the symptom points to the nerve. For example, a median nerve cut at the wrist numbs the thumb, index and middle fingers. Meanwhile, the ulnar nerve serves the ring and little fingers and many small hand muscles.

In addition, an upper arm fracture can injure the radial nerve and drop the wrist. In the leg, an injury beside the knee can affect the peroneal nerve. For that pattern, see our guide to foot drop surgery.

How Doctors Confirm a Cut Nerve

First, the doctor tests feeling in each finger and the strength of each muscle. Next, tapping along the nerve can show how far new fibers have grown. Nerve ultrasound or MR neurography also shows where the nerve breaks.

However, an EMG often misleads in the first three weeks. That is how long cut fibers take to break down. So after a sharp cut with lost feeling, surgeons often explore the wound directly instead.

Questions at this stage

When Should a Cut Nerve Be Repaired?

The type of wound sets the timing. So a clean, sharp cut does best with repair in the first few days. Crush and closed injuries, by contrast, need a period of watching first.

Why the Clock Matters

A muscle that receives no nerve signal slowly wastes. After roughly 12 to 18 months, it usually cannot respond, even if fibers finally arrive. So delays beyond about six months already reduce the chance of strength returning.

Feeling, on the other hand, tolerates delay better. That is why a late repair can still bring back useful sensation.

Nerve Repair, Nerve Graft or Nerve Transfer?

The method depends on the gap between the ends, the injury site and the delay. The table then compares the main options.

Direct Repair

When the ends meet without strain, surgeons stitch them together directly. This is the most natural repair and the most common one. Tension, however, pulls a repair apart, so surgeons avoid it.

Nerve Graft Surgery

If a gap remains, a nerve graft bridges it. Typically, the surgeon takes a minor sensory nerve from the lower leg. As a result, a small patch on the outer foot stays numb, which most people get used to.

Nerve Transfer Surgery

A nerve transfer borrows a healthy branch close to the muscle. Since the new fibers have a short way to grow, the muscle may wake sooner. However, transfers near the neck and shoulder belong to brachial plexus surgery.

What Happens During Nerve Repair Surgery?

Nerve repair is microsurgery. The surgeon works under a microscope with stitches finer than a hair. You usually sleep under general anesthesia or have a numbing block.

1. Cleaning the ends. First, the surgeon trims crushed and scarred tissue until healthy fiber bundles show.
2. Lining up the bundles. Next, the bundles face their matching partners. Otherwise, fibers grow into the wrong muscle or skin.
3. Stitching the outer layer. Then a few fine stitches close the outer sheath, or a graft goes in.
4. Protecting the repair. Finally, a splint holds nearby joints so the nerve stays slack.

In deep or mixed nerves, a nerve stimulator also helps. It tells movement fibers from sensory fibers. It also shows whether a scarred stretch of nerve still carries a signal.

Hand injuries often damage tendons and vessels too. In that case, the neurosurgeon works alongside a hand or plastic surgery team.

Nerve Repair Surgery Recovery Time

Recovery after nerve repair takes months, not weeks. The stitched site heals in a few weeks. Then fibers grow toward the muscle and skin at roughly an inch a month.

How Far the Nerve Has to Grow

Distance sets the pace. For example, fingertip feeling often returns several months after a wrist cut. A nerve torn near the armpit, however, may need over a year to reach the hand.

Hand Therapy and Physiotherapy

Therapy keeps joints from stiffening while the nerve grows. It also retrains your brain to read the new signals, so touch makes sense again. In fact, rising tingling during recovery often means the fibers are advancing.

Risks and What Shapes Your Result

Nerve repair carries the usual risks of surgery plus some specific to nerves. Most of all, recovery may stay incomplete, because not every fiber finds its old target.

• Infection, bleeding or a slow-healing wound
• Stiff joints if the splint stays on too long without exercise
• Cold sensitivity and clumsy fine movements, such as buttoning
• A painful neuroma at the repair or graft site
• A numb patch on the leg after a graft

Factors That Shape Recovery

Age matters first, since children regrow nerves faster and adapt better. Then come timing and level, since early repairs near the hand or foot do better. Pure sensory nerves also recover better than mixed nerves, while long grafts do less well.

Smoking, uncontrolled diabetes and vessel disease slow healing too. So stopping smoking before surgery helps your nerve as well as your wound.

Pain After a Nerve Injury

Burning or electric pain often comes from the nerve itself. Treatment starts with nerve pain medicines and desensitizing massage. If a neuroma keeps hurting, the surgeon removes it and then repairs or buries the nerve end.

Coming to Istanbul from the US, Canada, the UK or Europe

A fresh cut needs care close to home, ideally with repair in the first days. Delayed repair, graft, neurolysis, neuroma surgery and nerve transfer, however, fit a planned trip.

Records to Bring

• The emergency and operation notes from the original injury
• EMG and nerve conduction reports, with their dates
• Any ultrasound or MRI images on a disc, with reports
• Photos of the wound and a note of the injury date

Our checklist of documents for surgery abroad covers the rest.

How Long to Stay in Istanbul

First, plan a few days for the consultation and any new tests. Many repairs in the hand or arm then need only a short hospital stay. Overall, many people plan about a week to ten days, which your surgeon confirms.

When You Can Fly Home

Limb nerve repair is not brain surgery. So the UK CAA waiting time for skull surgery does not apply, and your surgeon decides. Also, after a new plaster cast, the CAA notes that many airlines restrict flying for 24 to 48 hours.

Long flights also raise the risk of blood clots. So walk the aisle and keep a splinted arm raised.

For flights and hotels, see stay and flight planning. From Canada, check with your provincial health plan and private insurer before you book.

Your Peripheral Nerve Surgeon in Istanbul

Prof. Dr. Serdar Baki Albayrak

Neurosurgeon · Full Professor of Neurosurgery

Prof. Albayrak repairs cut and scarred arm and leg nerves with microsurgery. He also times each repair to the type of wound. In addition, he co-authored research on nerve injury surgery and nerve scarring.

After medical school at Marmara University, he trained in neurosurgery at Istanbul University. Clinical fellowships at the University of Helsinki and Harvard Medical School followed.

27+Years

5,000+Operations

64Countries

33Publications

Figures from Prof. Albayrak's professional profile, September 2026. See his full publication list.

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