Carpal Tunnel Release
What is carpal tunnel release surgery?
Carpal tunnel release is a surgery used to treat and potentially heal the painful
condition known as carpal tunnel syndrome. Healthcare providers used to think that
carpal tunnel syndrome was caused by an overuse injury or a repetitive motion done
by the wrist or hand, often at work. They now know that it’s most likely a congenital
predisposition (something that runs in families) – some people simply have smaller
carpal tunnels than others. Carpal tunnel syndrome can also be caused by injury, such
as a sprain or fracture, or repetitive use of a vibrating tool. It's also been linked
to pregnancy, diabetes, thyroid disease, and rheumatoid arthritis.
The median nerve and tendons that allow your fingers to move pass through a narrow
passageway in the wrist called the carpal tunnel. The carpal tunnel is formed by the
wrist bones on the bottom and the transverse carpal ligament across the top (or inside)
of the wrist. When this part of the body is injured or tight, swelling of the tissues
within the tunnel can press on the median nerve. This causes numbness and tingling
of the hand, pain, and loss of function if not treated. Symptoms usually start slowly,
and may get worse over time. They tend to be worse on the thumb side of the hand.
It's not uncommon for a person to have carpal tunnel in both hands.
During a carpal tunnel release, a surgeon cuts through the ligament that is pressing
down on the carpal tunnel. This makes more room for the median nerve and tendons passing
through the tunnel. It usually improves pain and function.
Why might I need carpal tunnel release surgery?
A diagnosis of carpal tunnel syndrome is about the only reason to have a carpal tunnel
surgery. And even then, your healthcare provider will likely want you to try nonsurgical
treatments first. These may include:
Over-the-counter pain medicines
Changes to the equipment you use at work
Shots of steroids in the wrist to help ease swelling and pain
The reasons that a healthcare provider would recommend a carpal tunnel release surgery
The nonsurgical interventions for carpal tunnel syndrome don’t relieve the pain.
The healthcare provider performs an electromyography and nerve conduction test of
the median nerve and determines that you have carpal tunnel syndrome.
The muscles of the hands or wrists are weak and actually getting smaller because of
the severe pinching of the median nerve.
The symptoms of carpal tunnel syndrome have lasted a prolonged period of time with
What are the risks of carpal tunnel release surgery?
As with most surgeries, carpal tunnel release is not without its risks. Your wrist
will be made numb and you may be given medicine to make you sleepy and not feel pain
(called local anesthesia) for the procedure. In some cases, general anesthesia is
used. This is when medicines are used to put you into a deep sleep during surgery.
Anesthesia poses risks for some people. Other potential risks of a carpal tunnel release
The recovery from carpal tunnel surgery takes time – anywhere from several weeks to
several months. If the nerve has been compressed for a long period of time, recovery
may take even longer. Recovery involves splinting your wrist and getting physical
therapy to strengthen and heal the wrist and hand.
There may be other risks, depending on your specific medical condition. Talk about
any concerns with your healthcare provider before the procedure.
How do I get ready for carpal tunnel release surgery?
Tell your healthcare provider about all medicines you are currently taking, including
over-the-counter medicines, vitamins, herbs, and supplements. You will probably need
to stop taking any medicines that make it harder for the blood to clot, such as ibuprofen,
aspirin, or naproxen.
If you’re a smoker, try to quit before the surgery. Smoking can delay healing.
You may need to get blood tests or an electrocardiogram (ECG) before surgery.
You will usually be asked not to eat or drink anything for 6 to 12 hours before the
Based on your medical condition, your healthcare provider may request other specific
What happens during carpal tunnel release surgery?
Carpal tunnel release is usually an outpatient procedure. That means that you can
go home the same day as the surgery if all goes well. There are 2 types of carpal
tunnel release surgery. The traditional method is the open release, in which the surgeon
cuts open the wrist to do the surgery.
The other method is endoscopic carpal tunnel release. During this surgery, a thin,
flexible tube that contains a camera is put into the wrist through a tiny cut (incision).
The camera guides the healthcare provider as the surgery is done with thin tools put
into the wrist through another small cut.
In either case, here are the general steps in a carpal tunnel release surgery:
You will usually be asked to remove your clothing, or at least your shirt, and put
on a hospital gown.
You will be asked to sign a surgical consent form to give your surgeon permission
to do the procedure. Read the consent carefully and ask any questions you may have.
Typically, local anesthetic is used for this procedure to numb the hand and wrist.
In an open release surgery, the surgeon makes about a 2-inch cut on the wrist. They
use common surgical tools to cut the carpal ligament and make the carpal tunnel larger.
In an endoscopic carpal tunnel release, the surgeon makes 2 half-inch cuts. One is
on the wrist, and one is on the palm. Then they put a camera attached to a narrow
tube into one cut. The camera guides the surgeon as they insert the instruments and
cuts the carpal ligament through the other incision.
The surgeon will stitch up the cut or cuts.
Your hand and wrist will be placed in a splint or bandaged heavily to keep you from
moving your wrist.
Once the surgery is done, you’ll be monitored for a short time, and then allowed to
go home. Only in rare cases, or if there are complications, you will need to stay
What happens after carpal tunnel release surgery?
Your wrist will likely be in a heavy bandage or a splint for 1 to 2 weeks. Healthcare
providers usually schedule another appointment to remove the bandage or splint. During
this time, you may be encouraged to move your fingers to help prevent stiffness.
You’ll probably have pain in your hand and wrist after surgery. It’s usually controlled
with pain medicines taken by mouth. The surgeon may also have you keep the affected
hand elevated above your heart while sleeping at night to help decrease swelling.
Once the splint is removed, you will likely begin a physical therapy program. The
physical therapist will teach you motion exercises to improve the movement of your
wrist and hand. These exercises will speed healing and strengthen the area. You may
still need to sometimes use a splint or brace for a month or so after surgery.
The recovery period can take anywhere from a few days to a few months. In the meantime,
you may need to adjust job duties or even take time off from work while you heal.
Your healthcare provider will talk to you about activity restrictions you should follow
Let your healthcare provider know about any of the following:
Redness, swelling, bleeding, or other drainage from the incision
Increased pain around the incision
These problems may need to be treated. Talk to your healthcare provider about what
you should expect and what problems mean you need to see your healthcare provider
Before you agree to the test or the procedure make sure you know:
The name of the test or procedure
The reason you are having the test or procedure
What results to expect and what they mean
The risks and benefits of the test or procedure
What the possible side effects or complications are
When and where you are to have the test or procedure
Who will do the test or procedure and what that person’s qualifications are
What would happen if you did not have the test or procedure
Any alternative tests or procedures to think about
When and how you will get the results
Who to call after the test or procedure if you have questions or problems
How much you will have to pay for the test or procedure