My dr. Says I need the operation you had. Fusion L4 L5. Also a laminectomy. I had a hip replacement in September 2020 that went great. But found out I have bad arthritis in my back. I found physical therapy helped my back especially riding the stationary bike. If I do that I can tolerate the pain. I have to keep moving. I have spinal stenosis. I hope u too ou can find help to relieve your pain.