This is purely my subjective opinion:
I believe there is another factor other than the typical "you have low E" comments from most. When I look back in time from my years on and off TRT I would go through periods of achy joints, mostly first thing in the morning, and an overall feeling that I can only define as inflammation. Which goes against the thought process that TRT decreases inflammation (which I think is true for periods of time but not forever for everyone). During all this time, AI's were never part of the equation, and my E was often slightly above range but nothing way out of whack. One of the things I suspect could be a contributing factor is
high hematocrit. My joints that felt it the most were my knees and ankles, and I have poor circulation in my legs. Perhaps the high HCT was contributing to this even more resulting in starving these areas of the ability to transport nutrition to and inflammation away from.
Again this is purely a subjective thought, but I will say i'm 5 weeks now from my last injection and around day 3-4 after my last injection my achy joints were 90% better. Just prior to my last injection, my TT was 600's, E2 was a smidge above range, and HCT was 52%. This was on 15mg/day of Cyp. I'm not sure that my HCT would drop this quickly after my last injection and haven't got bloods yet, but this has been my experience thus far.