to view an animated version of this procedure.
Carpel tunnel release is a surgery where the ligament covering the carpel tunnel is cut open.
Carpal Tunnel Syndrome
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The median nerve runs from the forearm into the hand.
Carpal tunnel syndrome
occurs when this nerve is squeezed at the wrist as it runs through the carpel tunnel. This results in pain, weakness, tingling, or numbness in your hand and wrist. Pain may also radiate up your arm.
Carpal tunnel release is a surgery to relieve pressure on the median nerve. The pressure is reduced by opening the ligament of the carpal tunnel. The ligament is called the transverse carpal ligament.
Surgery to treat carpal tunnel syndrome is usually recommended in the following instances:
Other therapies have failed, including icing, splints or braces, anti-inflammatory medications, steroid injections, physical therapy, or ultrasound.There is shrinkage (atrophy) and weakness of the muscles controlling the thumb.Studies of nerve functioning show the median nerve is not working properly.
Complications are rare, but no procedure is completely free of risk. If you are planning to have carpal tunnel release, your doctor will review a list of possible complications, which may include:
InfectionBleedingSwellingScarringNerve damageStiffness of the fingersContinued numbness, tingling, weakness, or pain
Factors that may increase the risk of complications include:
alcohol use disorder
Taking steroid medication for other conditions
Your doctor may do the following:
Physical exam—concentrating on strength and sensation in the handsBlood testsNerve conduction studies—measuring the nerves' ability to send impulses to the muscles of the thumb
Electromyogram (EMG)—a recording of the electrical activity in muscles
Leading up to your procedure:
Talk to your doctor about your medications. You may be asked to stop taking some medications up to one week before the procedure.
Arrange for a ride to and from the procedure.Arrange for help at home after the procedure.The night before, eat a light meal. Do not eat or drink anything after midnight.You may be asked to shower the morning of your procedure.
General anesthesia or local anesthesia with sedation is used. If you have general anesthesia, you will be asleep during the procedure. With local anesthesia, the area being operated on will be numbed, and you may be given a sedation medication to help you relax.
A classic open incision or an endoscopic technique may be used:
A short incision will be made in the lower palm and wrist area. The carpal ligament will be opened. This will free the median nerve. The incision will then be closed with stitches. A bulky bandage will be applied to the wound.
Two tiny cuts in the skin will be made on the palm side of the wrist. A small tool with a camera will be passed through an incision. This camera will allow the doctor to see inside of the carpal tunnel. Other surgical tools will be passed through the other incision. These tools will be used to release the carpal ligament. After the camera and instruments are removed, a few stitches will be needed to close the incisions. A bulky bandage will then be placed over the wounds.
In some cases, the doctor may need to change to the open procedure.
Endoscopic Release of Carpal Tunnel
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Anesthesia will prevent pain during the procedure. When the anesthesia wears off, you will have some pain in the area. Talk to your doctor about medication to help manage the pain.
You will be monitored in a recovery area until you are ready to go home. Your hand and wrist will be wrapped in a bulky bandage. The wrist will be elevated to control swelling. Ice packs may be applied periodically.
When you return home:
Do not lift heavy things or strain the hand and arm until you are advised that you may do so by your doctor.Follow the exercise program recommended by your doctor once you have begun to heal. You may be asked to go to physical therapy.Arrange to have help around the house, especially if you have had both hands operated on.Many cases of carpal tunnel syndrome are believed to occur due to repetitive actions (often related to work). Check with your doctor about how to prevent a recurrence.
You may have to wear a brace or splint for several weeks after surgery. Complete recovery may take 4 weeks or longer. The pain and numbness or tingling in your hand and fingers usually improves quickly. Your strength will slowly begin to improve.
After arriving home, contact your doctor if any of the following occur:
Signs of infection, including fever and chillsRedness, swelling, increasing pain, excessive bleeding, or any discharge from the incision siteNausea and/or vomiting that you cannot control with the medications you were given after surgery, or which persist for more than two days after discharge from the hospitalPain that you cannot control with the medications you have been givenIncreased tingling or weakness in your handFingers become extremely swollen, cool, or discoloredCough, shortness of breath, or chest pain
If you think you have an emergency, call for emergency medical services right away.
Carpal tunnel release. Johns Hopkins Medicine website. Available at: http://www.hopkinsmedicine.org/healthlibrary/test_procedures/orthopaedic/carpal_tunnel_release_135,29/. Accessed September 9, 2014.
Carpal tunnel syndrome fact sheet. National Institute of Neurological Disorders and Stroke website. Available at:
Updated September 5, 2014. Accessed September 9, 2014.
Last reviewed September 2016 by Teresa Briedwell, PT, DPT, OCS, CSCS
Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.
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