Reduced swelling reduces pain, allowing dogs to stay more active and use muscles, which helps prevent loss of muscle mass.
I would go for Omega 3
supplements, plus Glucosamine and
Chondroitin (I have forgotten the exact dose of Glucosamine/Chondroitin per pound of the dog's weight, but I give my 28lb dog the max. dose for her weight which is 500mg Glucosamine, and 200mg Chondroitin, so maybe you can calculate from that....