There is no way, "natural" or not, to prevent fusion. The subject is explored in the following article. It is free to read but very scientific & hard to follow (for me anyway.)http://www.ancyloss.com/publications/schett_rudwaleit.pdf
Jen, 42, happy partner of James and Moma to Evan, 14, & Lucy, 12.5 (Crohn's dx @ age 3; on Remicade since April 2010.) I take piroxicam, Flexeril, & Nucynta ER nightly. 3 anti-TNFs didn't pan out for me.
"Science is the father of knowledge, but opinion breeds ignorance." -- Hippocrates