If i have hypotrophic facet sclerosis, can that b what caused sciatica?

Yes: Facrt sclerosis hypertrophic means joint arthritis with bone spurring which can lead to pressure on L5 or s1 nerve roots and produce posterior leg pain with standing and walking or siatica.

Spinal stenosis: Sounds like you have hypertrophic facets which can contribute to spinal stenosis, meaning that they can put pressure on the nerves and cause radiating pain down the leg. So to answer your question- yes.

Hypertrophic?: Hypotrophic suggests the joint didn't grow into the right size. Unsure, but I would suggest you see a spine specialist to address what your MRI findings are and how that relates to sciatica pain.