Bone biopsies are weird, I've had 6 and don't remember a single one. I know years ago when you received a bone biopsy it was carried out with just local anesthetic. Well I'm a big baby, so they knocked me out every time and I'm very grateful for such kindness. I received a non pain medicated spinal tap once... NEVER AGAIN! I learned quickly that I don't like pain. Ha... ha.. ha...