My grandmother is 85 now. She had a knee replacement surgery about 8 years ago on her right leg. The same was botched up and a second surgery had to be done on the same leg a year later. All reports now show that everything is normal but she still has immense pain everyday in the right leg near the replacement area. She has to take pain killers everyday. We've tried everything from massages to physiotherapists. She herself is a doctor too. But nothing works against the pain. We are now thinking of acupuncture but I am unsure if it works, considering her age and the surgeries. Please advise on the best method going forward.