These are the non-fusion decompression surgeries. So these are the patients who have stable spine, who have single or multiple level stenosis. These can even be done at all five levels of decompression. These are done from the back essentially. This is central decompression, far lateral decompression or recess decompressions. These can be done in minimal invasive fashion now. We can use tubes and microscopes. So we go with small incisions and we can do it.
Read more about Lumbar Canal Stenosis here