Sorry to hear of your uncle. It is hard to lose loved ones.
Sorry to bug you when you are having a hard time, but when you used to have problems with your tibia and fibula "popping out" how would you put them back in? I have had issues with my lower leg since my original surgery, and even more so lately. Sometimes I will start walking and it will feel very weird in my lower leg- almost as if the bones are not in place. After a few minutes, I will feel (and hear) a very loud clunk and it will feel like the bones in my lower leg are shifting back into place. It often hurts until this clunk happens and will hurt at the clunk, but then my leg will feel very relieved after. Every now and then, the clunk will not occur and I find myself twisting and turning my leg trying every which way to release the "pressure feeling" that I have. It is mainly a feeling near the fibular head that this happens. Before my revision, I would twist my leg and try to "pop" it- but no one seemed to understand what I meant about it needing to pop. After a clunk today, I realized that my problem sounds a lot like what you used to complain about. Not sure why I didn't make the connection any earlier.
Anyway- again, I am so sorry to bug you when you obviously have other things on your mind, but had to write this out while I was thinking of it.
Take care. I will remember you and your family in my prayers.