I get it in the arm, leg and hip joint when my TSH is too high.
BUT I also found out that when Hypo...fluid is retained and they found fluid in my hip joint.
After numerous arguments about pumping steroid 'cr@p' into my hip...I let it go and it fixed itself.
Sometimes the burning would be so bad that I would be in tears and as for the leg, I would feel it 'give way' on me too.
Get yr TSH checked as that is the only time I get these sensations ...when it is too high.
You are not alone alone on this one...I assure you.