I have had two fusions, the first at L4-5, then 2 years later a revision removing those screws then an L5-S1 fusion. I had osteoporosis in my spine and osteopenia in hips and neck. After my first dexa bone scan the doctor suggested taking 2 D3+K vitamins along with magnesium, coQ10, turmeric and other supplements, two years later, my dexa bone scan showed my spine number had improved to severe osteopenia. I did improve my diet as well, did some walking.
I am not able to walk much now, as my neck needs help, my stenosis and other issues are really hurting.
But don’t think you can’t get help! I had my surgery at Mayo, and specifically asked if osteoporosis would prevent me from having surgery. They said no. But everyone needs to get a professional opinion as we are all different.
I was nervous about having a fusion too.
I wish you the best!