I can't diagnose your disorder for you but one of the reasons I'm going to go back on HRT is the return of the various niggling aches and pains. My whole leg aches for nothing. I haven't taken up pole-vaulting, I don't hop, and it isn't the old knee playing up. Ditto my shoulder. The aching went away during the year I was on HRT. Might be coincidence but I shall shortly find out.