Introduction
Carpal tunnel release is a surgical procedure performed to treat carpal tunnel syndrome, a condition caused by the compression of the median nerve as it passes through a narrow passageway in the wrist called the carpal tunnel. This compression leads to symptoms such as pain, numbness, tingling, and weakness in the hand and fingers (particularly the thumb, index, and middle fingers). When conservative treatments like wrist splints, corticosteroid injections, and ergonomic adjustments fail to relieve symptoms, or if there is evidence of nerve damage or severe muscle weakness, surgery is often recommended. The goal of the surgery is to relieve pressure on the median nerve by cutting the transverse carpal ligament, which forms the roof of the carpal tunnel. This creates more space for the nerve and tendons, alleviating symptoms and preventing permanent nerve damage.

Surgical Procedure
Carpal tunnel release is a quick outpatient procedure, usually taking less than 30 minutes. It is typically performed under local anesthesia, meaning only the wrist and hand are numbed, and the patient remains awake.
There are two main surgical techniques: open release and endoscopic release.
In an open carpal tunnel release, the surgeon makes a small incision (about 1 to 2 inches long) in the palm of the hand over the carpal tunnel. The surgeon then carefully cuts the transverse carpal ligament to enlarge the tunnel and relieve pressure on the median nerve.
In an endoscopic carpal tunnel release, the surgeon makes one or two very small incisions (less than half an inch) in the wrist or palm. A thin tube with a camera (endoscope) is inserted to view the inside of the carpal tunnel on a monitor. The surgeon then uses a tiny cutting tool attached to the endoscope to sever the transverse carpal ligament.
Both methods are highly effective. Endoscopic surgery may offer a slightly faster recovery and less initial pain in the palm, but it may not be suitable for all patients. After the ligament is cut, the skin incisions are closed with stitches and the hand is heavily bandaged.

Surgical Risks
Carpal tunnel release is generally very safe, but risks include minor bleeding, adverse reactions to the local anesthetic, and a small risk of infection at the incision site.

General Complications
Common post-operative complications include:
– “Pillar pain”: Pain or tenderness in the palm around the incision site, which is very common and can last for several weeks or even months.
– Swelling and stiffness in the fingers and wrist.
– Temporary weakness in grip strength, which gradually improves as the ligament heals and expands.

Rare but Serious Complications
Serious complications are rare but can include:
– Nerve damage: Injury to the median nerve or its branches during the surgery, which could cause permanent numbness or weakness.
– Incomplete release: If the ligament is not completely cut, symptoms may persist, requiring a second surgery.
– Complex Regional Pain Syndrome (CRPS): A rare condition causing chronic, severe pain and swelling in the hand.
– Bowstringing of tendons: A rare issue where the tendons in the wrist shift out of place.

Pre-operative Preparation
– Medical Evaluation: A physical exam and possibly nerve conduction studies (EMG) to confirm the severity of the nerve compression.
– Medication Review: Inform your doctor about all medications, especially blood thinners, which may need to be paused.
– Arrange Help: Because your hand will be bandaged and have limited function, arrange for help with driving and daily tasks (like cooking and dressing) for the first few days.
– Fasting is usually not required for local anesthesia, but follow your doctor’s specific instructions.

Post-operative Care
You will go home shortly after the procedure. Your hand and wrist will be wrapped in a bulky bandage or splint to restrict movement and protect the incision. You should elevate your hand above your heart as much as possible for the first few days to reduce swelling. Moving your fingers frequently is encouraged to prevent stiffness. Pain is usually manageable with over-the-counter pain relievers or prescribed medication.

Wound Care
– Keep the bandage clean and dry. You will likely need to cover your hand with a plastic bag while showering.
– Do not remove the bandage until instructed by your surgeon (usually at your first follow-up appointment, 1 to 2 weeks later).
– Once the bandage and stitches are removed, you can wash the area gently with soap and water, but avoid soaking the hand until fully healed.

Diet
No specific dietary restrictions apply. Resume a normal diet.

Post-discharge Notes
Recovery time varies. You can usually return to light activities within a few days, but heavy lifting and forceful gripping should be avoided for 4 to 6 weeks.
– Nighttime numbness and tingling often improve immediately, but numbness present during the day may take months to resolve as the nerve slowly heals.
– Physical therapy or hand therapy may be recommended to help restore grip strength and wrist flexibility.
– Contact your doctor if you experience severe pain not controlled by medication, excessive swelling, fever, or signs of infection at the wound site.