@fingercuffs sounds like you have the food and nutrient angle covered! Wow damn, did it get worse with the tamoxifen? One of the side effects is joint pain.
I do a lot of emotional work in the body and even having a conversation with the pain can bring some new awareness and release. I treated an osteopath once who saw fifteen other physical therapists stating that no one had been able to unlock her right hip. It was very stuck.
I checked in and asked her to state, “I release my anger at my father.” And her locked hip suddenly splayed open and all these old emotions came to the surface.
So another model to look at is around emotions getting stored in the hip (right side - towards father, men) (left side - towards mother, women). The hips are also the ability to move forwards, which has been pretty messed up in this covid time.
Just thought I’d offer another avenue to explore of the repression of unwanted emotions that get stored in the body and can impact the blood flow to that body part eg. Anger in liver, grief in lungs. Our prime minister got ‘stabbed in the back’ by his deputy prime minister (and the whole party) 12 years ago and shortly after needed gallbladder surgery.