"Mostly physical repair," the Doctor replied. "He delighted in picking Martha's brain before---"

He swallowed. Martha. Sweet, beautiful Martha. She loved him, and he could tell she still loved him as the Valeyard destroyed her. His hearts hurt just thinking about it.

"He stitched you up. Literally, I'm afraid. And...well, then there was a bit of time manipulation involved. Which can't be reversed."

It could, of course. But the Doctor wouldn't allow it. Not even the Valeyard would want to.