my surgery is next tues. Today I got in the mail a paper from the surgeon saying he is doing a "2 lifs at L4-5 and L5-S1." and "we will also do facet fusions at L4-5 and L5-S1 with no transverse process fusion". I have researched the TLF but I do not know what facet fusions are or what "no transverse process fusion" means. Can anyone help me understand this? Thanks!