Funny story.

Indications were he shouldn’t have recovered; and he was surprisingly positive, showing resilience to his disability and thinking about how he might continue life as a poet.

But, his sister, a dark mage, was far more mortified about it than he was, and made a magical sacrifice, killing some creature and draining her own lifespan - to restore his full motion. All of this, without asking his permission. He turns out okay, but there’s an implication he shouldn’t have.

So yeah, it’s part of a dramatic arc in that story.