My lower back is junk

I had L4,L5,S1 fused at the age of 35. Its been 13 years, I traded one pain for another by having the surgery... I pretty much didn't have a choice though as my legs would go numb with radiating pain down the *** and legs. I have never been given anything for pain since I had the surgery. Makes it tough to get motivated to work on the cars sometimes.