You'll find a variety of varieties of fracture to The bottom in the thumb; these are definitely referred to as Rolando fractures, Bennet's fracture, and Gamekeeper's thumb. One more widespread fracture, called Boxer's fracture, is to the neck of a metacarpal. One can even have a broken finger. Extension: Muscles https://freeadsonline.biz/453/posts/3/125/3949322.html