Endoscopic carpal tunnel release surgery (two-portal technique)

Endoscopic carpal tunnel release surgery (two-portal technique): "Illustration copyright 2002 Nucleus Communications, Inc. All rights reserved. http://www.nucleusinc.com
In endoscopic carpal tunnel release surgery, the transverse carpal ligament is cut, releasing the median nerve.
Endoscopic surgery uses a thin flexible tube with a camera attached (endoscope). The endoscope is guided through a small incision in the wrist (single-portal technique) or at the wrist and palm (two-portal technique). The endoscope lets the doctor see structures in the wrist (such as the transverse carpal ligament) without opening the entire area with a large incision.
The cutting tools used in endoscopic surgery are very tiny and are also inserted through the small incisions in the wrist or wrist and palm. In the single-portal technique, one small tube contains both the camera and a cutting tool.
During endoscopic carpal tunnel release surgery, the transverse carpal ligament is cut. This releases pressure on the median nerve, relieving carpal tunnel syndrome symptoms.
In endoscopic carpal tunnel release surgery, it is usually not possible to see ganglions or tumors. But these are rare causes of carpal tunnel syndrome."