Use "facial nerve" in a sentence

1. The problem was a facial nerve

2. I didn’t pay much attention as I was preparing for a big operation the following day to repair my facial nerve

3. Then he followed the facial nerve from the temporal bone where it enters the skull all the way to its exit, and on the way removed many more fragments of bone which had been restricting my jaw movement

4. Afterwards Mr Irving said it was the best outcome he had seen in twenty years of facial nerve surgery, and it was 86 per cent recovered