I'm a senior 74. Had 3 level fusion, pins & screws, bone pack, L3,4,5 in 1968, 44 years ago. Have had burning in quads for many years after only few minutes walking. Stairs are nearly impossible. Can't rise from a squat. Constant soreness across pelvis day & night. Had knee replacement 2007, the other is on the books. Meds - tylenol. Cautious with others because of heart disease.