Probably. And yes, he had surgery. I think somebody posted his tweet about it here, not too long ago.
In a way I see this as a good thing.
I mean in the sense that I surgery itself
went well and while I am not sure "fixed"
would be the right word to use here I
think/hope it will at least, after recovery,
make life more comfortable for Togashi.
I get the feeling that even after Togashi
recovers he will be limited in how much
time per day he can actually draw yet
I think all things considered that may actually be a best possible outcome.