I tried to reply to you earlier but it may not have posted? I am over 75 as well and furious that a medical provider would have told you that you will have excruciating pain. I did not! I had a double mastectomy and some lymph glands removed. Not nearly so bad as knee surgery. Which was worth the discomfort, as is breast surgery often enough. I hope you will get through this as you have gotten through other difficult procedures. Hang in there. Don’t let anyone contaminate your thinking with negativity! All my best!