Good for you that you have aged well, but those doctors are not idiots: risk != certainty. They know that unilateral osteoarthritis is quite common amongst the old.
If they weren't idiots then they would know that the mere fact of unilateral osteoarthritis being common amongst the old doesn't mean that aging should be considered a possible cause of unilateral osteoarthritis.
Good luck with your search for doctors and establishing cause for a degenerative disease while factoring out age. Glad you agree with the doctors after all that it is indeed common with age, and seemingly also that the equal age of your other knee is irrelevant in your retort to the doctor’s good faith textbook feedback. In fact, the other knee is irrelevant even if age were the sole causative *risk* factor, and the cause is almost certainly multi factorial.
If they weren't idiots then they would know that the mere fact of unilateral osteoarthritis being common amongst the old doesn't mean that aging should be considered a possible cause of unilateral osteoarthritis.
Good luck with your search for doctors and establishing cause for a degenerative disease while factoring out age. Glad you agree with the doctors after all that it is indeed common with age, and seemingly also that the equal age of your other knee is irrelevant in your retort to the doctor’s good faith textbook feedback. In fact, the other knee is irrelevant even if age were the sole causative *risk* factor, and the cause is almost certainly multi factorial.
I'm not looking for a doctor, but thanks. For any disease that is more common with age, there are these salient possibilities:
1. The simple fact of existing causes the disease, and therefore the longer the person is in existence, the more likely they are to get the disease.
2. Something that the person is doing, likely repeatedly (such as choice of nutritional intake), causes the disease, and therefore the longer the person is alive, the more often they have done that thing and thus the more likely they are to get the disease.
If #2 is the correct option, the risk factor is not age but rather whatever the underlying action is. Lazily concluding that age is a likely cause just delays determination of the actual cause. And it's not hard to say which of the above options seems inherently more probable...