Re the safety of spinal surgery, I am age 86. Have had numerous surgeries for spinal stennosis, cervical, lumbar, etc. I have also had open heart surgery, replacing left ventricle ring, and replacing aortal valve. My previous spinal problems caused the pain on the right side, back, buttocks, and leg. This time I am hurting on the left side. I don t know if that makes any difference with regard to what gets done. My BP is under good control.I cannot take oral pain relievers. Cause major stomach bleeding. Morphine does well.Any concerns offhand?