I have a sacrilized l5, also spondylolethesis between l4 and l5. i'm in pain all of the time, i walk and it hurts my legs are curving and my calves are shrinking and they are swelling. i've had the epidural when should i consider surgery?

Sounds like you have a very intricate and difficult diagnosis. However, if you wish to try to start walking and having difficulty doing so you might want to seek the help of a podiatrist who is knowledgeable in bio mechanics. They might be able to help relieve stress on your lower back It is non surgical and everything to gain

Back surgery involves aggressive intervention with no absolute guarantee of success. Usually indicated when there is an unstable spine, progressive muscle weakness, and atrophy, urinary problems, and progressive unrelenting immobilizing pain. It is always best to try conservative interventions initially, such as physical therapy and exercise.