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Home > Wellness Resources > Health Library > Open Carpal Tunnel Surgery for Carpal Tunnel Syndrome
During open carpal tunnel release surgery,
transverse carpal ligament is cut, which releases
pressure on the
median nerve and relieves the symptoms of carpal
An incision is made at the base of the palm of
the hand. This allows the doctor to see the transverse carpal ligament. After
the ligament is cut, the skin is closed with stitches. The gap where the
ligament was cut is left alone and eventually fills up with scar tissue.
If you have open carpal
tunnel release surgery, you typically do not need to stay in the hospital. It is
usually done under
local anesthetic, and you can go home on the same
After surgery, the hand is wrapped.
The stitches are removed 10 to 14 days after surgery. The pain and numbness may go away right after
surgery or may take several months to subside. Try to avoid heavy use of your
hand for up to 3 months.
When you return to work depends on
whether the dominant hand (the hand you use most) was involved, what your work
activities are, and how much effort you put into rehabilitative physical
Open carpal tunnel surgery is
Most people who have surgery for
carpal tunnel syndrome have fewer or no symptoms of pain and numbness in their
hand after surgery.1
In rare cases, the symptoms of
pain and numbness may return (the most common complication), or there may be
temporary loss of strength when pinching or gripping an object, due to the
cutting of the transverse carpal ligament.
If the thumb muscles
have been severely weakened or wasted away, hand strength and function may be
limited even after surgery.
The risk and complication rates of open surgery
are very low. Major problems such as nerve damage happen in fewer than 1 out of
100 surgeries (less than 1%).2 There is a small risk
that the median nerve or other tissues may be damaged during surgery. After
open surgery, recovery may be slower than after endoscopic surgery. And there
may be some pain in the wrist and hand. You may also have some tenderness
around the scar. There are also the risks of any type of surgery, including
possible infection and
risks of general anesthesia. But most open carpal
tunnel surgery is done with
local anesthesia or regional block rather than with
Open carpal tunnel surgery cuts
open the base of the palm and requires a longer recovery period than endoscopic
surgery. Temporary nerve problems may be less likely with open surgery. But painful scar tissue may be more likely to develop after open surgery
than after endoscopic surgery.1
endoscopic and open carpal tunnel release have benefits and risks. Studies do
not show that one procedure is better than the other.2
Talk to your doctor about your options.
Complete the surgery information form (PDF)surgery information form (PDF)(What is a PDF document?) to help you prepare for this surgery.
Ashworth N (2011). Carpal tunnel syndrome, search date July 2011. Online version of BMJ Clinical Evidence (10).
Scholten RJPM, et al. (2007). Surgical treatment options for carpal tunnel syndrome. Cochrane Database of Systematic Reviews (4).
October 2, 2012
Kathleen Romito, MD - Family Medicine & Herbert von Schroeder, MD, MSc, FRCSC - Hand and Microvascular Surgery
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