Ulnar dimelia

[mellowyellow]

a rare developmental anomaly.

 

[Judycat]

So instead of a thumb you get four more fingers. Bonus.

 

[Ruthanne]

I wonder if that hand works with all those fingers on it.

 

[jujube]

It has something to do with the Sonic Hedgehog gene. Hmmm, all this time I thought that was just a video game. You learn something new every day.

 

[Murrmurr]

Pretty handy!

 

[Murrmurr]

I wonder if that hand works with all those fingers on it.

Double-time.