my surgeon told me that he cut the spinous processes of the vertebrae to stimulate bone fusion and use those bone fragments as bone graft. My question is: as some muscles attach there and have its origin there what happens after? Where do they reattach those muscles?

I have been watching some scoli surgery intra-op videos on youtube but the op is not shown in full so I wonder how do they reattach those muscles. In the videos I have seen the bones are full exposed so it seems all the muscles are retracted.

any ideas?

I have been having some pain around the incision . I don t know if it is pain from the muscles, from the ligaments( btw, what happens to the ligaments after bones are fused ( they have no function to provide), epidural fibrosis or some inflammation around the spinal cord.