In a post titled "So, I broke my neck," Clarisse Thorn says

That’s why I haven’t been around the Interwebs for a while. Because I broke my neck in a bicycle accident.

...

The only reason I survived this accident with nothing more than a fractured spine is because I was wearing a helmet. If I hadn’t been wearing a helmet, I would be dead right now. Wear a helmet!

Source: Clarisse Thorn

She says it doesn't look like there will be any neurological issues or paralysis but at the moment she's in a brace that's literally screwed into her skull.

This would be a good time to mention that I wish there was a good way to say "I'm sorry XYZ happened" that didn't at least peripherally imply a sense of responsibility for someone else's woes. Lacking that I'm just going to say I'm really sorry Clarisse was injured so badly and I'm glad that she wasn't more badly hurt.

I like Clarisse a lot, and as long as I've been reading her I've really valued her commitment, her perspective, and her insights into areas of gender and sexuality that have historically been swaddled in assumptions, stereotypes, myths, and sometimes deliberate untruths.

From the bottom of my heart I wish her a speedy and complete recovery.

And yeah, wear a helmet and if you've got loved ones do what you can to make sure they wear theirs.