Hi there. I suggest you stop limbrel because although it might be a nutrient supplementing drug for treating inflammatory arthritis, one of the probable concerns is exacerbation of the existing GI ulcers and cardiovascular problems. I doubt the aneurysm could be related problem. You have to first realize that osteoarthritis being a degenerative and age related disease, one cannot completely cure it but you can stop its progression. Reducing weight has proven to be beneficial in any stage of osteoarthritis. Start doing some static quadriceps exercises and knee range of motion exercises. Also avoid climbing stairs frequently and squatting. There are various other supportive treatment modalities like visco-supplementation where hyaluronic acid is injected into the joint or usage of glucosamine sulphate 1.5g daily, but they are still to be conclusively proven. But with reducing your weight and doing regular physio you might be able to bring down your symptoms significantly.