Yes, it's part of my PN, I have a crushing feeling in the morning when I wake up. Exactly as you describe. I told the neurologist about it this week when I went, and the fact that I feel like I'm walking on rocks. That'll probably pop up too if you already have the feeling that your bones are breaking.
He asked if I had plantar fascitis, and checked my feet, but they were normal looking. I've been to the podiatrist and they didn't find anything. The neurologist was complimenting me about how smooth my feet were, like he was admiring them, lol. He told me to hit the B-vitamins really hard 'take as much as you want' were his words, so that's what I've been doing and the crushing is going down some. But yeah, it's all part of the progression. Pretty soon you'll probably feel like you're walking on rocks too.