I had a Hip Replacement when I was on 200 mg of Test a Week.
But I wasn't using an AI, if I was, I would have made the Anesthesiologist aware of it.
That's the Guy you really need to tell, as He's in Control of what will be used for the Surgery.
Arimidex and Aromasin both have many Drug Interactions ~ Too many to list.
But some Narcotics and Tylenol are among them............................... JP