About knee arthritis.?

I suffered a minor ACL tear of my right knee about 16 years ago. Didnt require surgery, just some PT that i slacked on. Now, anytime I do anything strenuous, such as last week’s job that involved moving heavy furniture, I find my knee swollen, and almost unable to bend it. Stairs and ramps are a killer too. I can function, and indeed do still walk and work around, but I’d like to hear some good homegrown remedies for it. I have been taking ibuprofen regularly to combat the swelling, and have been using Capazin ointment, but to no real avail. I have to be on my feet 8 hours a day at least to work, on concrete floors and ladders. Just bought some new shoes, but nothing expensive, and i am using insoles. I need some relief! Help! Thanks!

This guy is an 18m/o Border Collie, he came to me 3 weeks ago as a shelter pull. He was a stray with no known history, he had pneumonia, was 15lbs under weight and not eating, he was unable to sit and showed L Rear hip/leg swelling and pain to the touch for the first 3 days, 3 weeks later he is able to sit, run and jump on furniture comfortably. He was officially diagnosed with early stage Osteoarthritis and Osteosclerosis today. So far, I have been treating it with a good protein rich non-grain/corn diet, joint supplements (starting today), regular informal massages and a healthy weight maintenance program. My ideas so far for causes are; early prolonged nourishment, genetic/congenital, hindered circulation or auto-immune. Any details would be greatly appreciated.