Is arthroscopic knee surgery even beneficial for advanced osteoarthritis?

They will all probably opt for the scope on the knee first. I have severe arthritis in both my knees and i get A LOT of relief when they go in and do this to the left knee, the right knee nothing helps. So i have seen each side of the coin. The recovery time for the scope is super short, i was back to work in 3 days and only on crutches for a few hours. A knee replacement is a ***** of a surgery to go through, my mom just had a partial replacement done and the pain for that surgey is WAY worse that just getting a scope done. Will she need the replacement probably but it never hurts to try to quick fix first.