Robb is beginning to regain sensation around the site of his surgical incision. It seems that whenever he starts to get feeling back in a part, there is a period where his body is experiences slightly "scrambled" signals.
Lately, he says that when he has his brace off, that part of his back feels larger or fuller than he thinks it should, and his mind is telling him that he is able to feel all the metal structures that have been installed in his spine.
Although there is a fairly significant amount of what they call "instrumentation" in his back, it is highly unlikely that he is able to feel any of it. If anything, Robb's back may be slightly less curved than it used to be. But I'm not sure if this is true, either. Robb's xrays show a spine that curves in a smooth, uninterupted manner.
For the first few days after Robb's accident, Robb's body was telling him that his toes were tied in knots, which they weren't. He would ask me to touch his toes so that his brain and eyes could get the correct signal, and he could disregard the incorrect information.
As we were waking up this morning, I put my hand on Robb's back and this apparently triggered these sensations. Odd, and slightly unpleasant, but I do take this a good sign.