I have had 3 BMB and each one wasn’t bad. The first was done right in my hospital bed when I was diagnosed! They loaded my hip with lidocane numbing agent. The sound of the drill was more disturbing than the procedure itself!
The 2nd one was also done with local numbing in my hip. The 3rd was done in a surgery center under light sedation. With all 3 I had only pressure sensation and some tingling. My experience has been
The folks who do BMB do them all the time and are skilled technicians. If your MD orders a BMB I hope your experience is similar to mine.