At age 63, I have 2 knee replacements, 1 repaired femur that snapped in half, a reattached Achilles tendon, 2 fused cervical vertebrae (and surgery coming up in 2 weeks to do the same to vertebrae above those two). Didn't know osteoarthritis could occur in double digits, but I have it in 25+ joints. Have osteoporosis, too.…