There are different techniques when performing a spinal canal stenosis operation. The expected results of all methods are very similar and the choice of operation will be decided by the surgeon. Endoscopic surgery differs from conventional open surgery by having a shorter postoperative recovery time and a much shorter return to work and sports activities since the aggression to the tissues is minimal.

Endoscopic surgery for canal stenosis can vary depending on the type, level and location of the stenosis. In cases of stenosis or foraminal hernia, uniportal endoscopy would be more indicated. In cases of stenosis of the central canal or the lateral recesses, uni or biportal techniques could be used. The result of the surgery is the disappearance of the radiating pain or the claudication of gait in the immediate postoperative period.

Figure 1: Example of canal stenosis with area of narrowing.

Figure 2: in orange the stenosis site is observed. Before and after spinal canal release. This is what is commonly known
as “laminectomy.”