Leesa, I have heard that people see bone growth after 4 weeks and some have complete fusion after 3 months. I am concerned and scared. Not sure if my DDD and arthritis will have a negative impact on my progress. I don't want to feel like my old self I want my prior 5 year self back. Hope I'm not asking too much. Bach then I could go on vacations with my family to theme parks go on he roller coasters/rides or go hiking in the desert or mountains. Hoping my future will hold those activities. Have a good day.