A nice example of anatomical variation: the size and shape of a notch in the top of the shoulder blade is quite variable, and nerve impingement is much more likely if you’ve got the wrong type of notch. More anatomical variation examples:
This is the MICROBLOG: small posts about interesting stuff that comes up while I’m updating & upgrading dozens of featured articles on PainScience.com. Follow along on Twitter, Facebook, or RSS. Sorry, no email subscription option at this time, but it’s in the works.