Hi - Maybe I can help a little.

At L3-4, you have a disc bulge, but the spinal canal is NOT narrowed because of it. You have neural foraminal narrowing -- the neural foramen is the hole that the nerves pass thru to the spinal cord. That is narrowing.

At L4-5 you have a disc bulge, and the central spinal canal is mildly narrowed. Facet hypertrophy is an overgrowth of bone from the facets -- the facets are the "winglike" structures on each side of the spine. You can see them when you hunch over -- they kind of stick out.

At L5-S1 you have only a disc bulge.

You have "degenerative disc disease" which is a drying out of the discs, which tends to flatten them and then they bulge & herniate. EVERYONE gets this, which happens as we age, but not everyone has pain with it. Some of us get DDD earlier than others too.

Hope I helped a little! Best of luck & God bless. Hugs, Lee