When it comes to Walker injuries, it doesn't take much to spell the end for one of the survivors of AMC's weekly zombie apocalypse. So when we see Rick (Andrew Lincoln) look worryingly at his thumb after dispatching a few of the undead with a knife in this clip from next week's "The Walking Dead," there's every reason to be concerned.

Of course, fans of the comics know that Rick lost his hand early on thanks to a Walker bite the Governor. And while most everyone asked about the show mirroring that aspect of the source material, from co-creator Robert Kirkman on, has said there was no way we'd see Rick become a one-handed protagonist on television, it's hard not to read into this scene just a little bit. Will Rick have to take drastic measures to keep a zombie transformation at bay?

"The Walking Dead" airs Sundays at 9 p.m. on AMC.