@barbarian1 I am sorry and myself, must be very careful because I have been prone to falls since childhood. (my knees are SAFE from any surgery because there is so much scar tissue!)
The military "ibuprofened me" into the hospital 25 years ago. The attending doctor informed me it was the worst medication to immediately stop (for chronic long term use). I went through severe withdrawals. Then they agreed to put me on lightweight narcotic and here I've stayed ever since! My chronic sciatic problem was resolved with hip replacement surgery and finally with back surgery. They straightened out L3 - L5 and that relieved the muscles from going into spasm. 25 years ago I was also diagnosed with piriformis disorder and 10 years ago with SI joint issues so who knows what the primary issue is any more. BUT - every tax season if I sit too much it returns. Stretching/walking/ keeping the piriformis muscles in shape and aligned. This means going to an MFR therapist who smooths out the muscles that press on the nerves. Works like a charm. Find a great MFR therapist. Don't expect to go one time.