What Is The Treatment For Severe Spinal Stenosis?

Hi, I have severe spinal stenosis - L4/L5. Per MRI, the L4-5 disc space ;evel demonstrates moderat to severe spinal stenosis secondary to a bulging disc as well as ligamentous and bony facet hypertropic change. The L neural foramen demonstates severe stenosis. I also have some scoliosis. Originally had pain radiating down my R thigh but with 2 epidurals was able to walk for several miles at a time (up to 4 miles per day) during a recent vacation. But the one symtom that has not improved is difficulty changing floor surfaces. I feel as though I am drunk when I first step on linolium. I also have efforts of severe sweating that just started. Is this due to the stenosis. I am 60, 5 2 and 158 #. I also have hi BP and hi cholesterol. What treatment would you suggest. If surgery, is it possible to microsurgery rather than a laminectomy. I am concerned about a possible spinal fusion with a laminectomy. Thanks Anna