As these are colloquial terms, texts and medical dictionaries do not universally agree on precise meanings. Various authorities state that a<unk> " means a break in specifically the second metacarpal bone or third metacarpal bone, with "bar room fracture" being specific to the fourth metacarpal bone or fifth metacarpal bone. This is derived from<unk> s properly punching through the 2nd and 3rd knuckles, whereas inexperienced fighters often connect with the weaker 4th and 5th. Though some writers assert that<unk>  and bar room fracture are distinct terms representing injuries to different bones, this distinction seems to have been lost and most medical professionals now describe any metacarpal fracture as a<unk> ".
Boxer's fracture
Chauffeur's fracture
Smith's fracture
Pott's fracture
Malgaigne's fracture
Bennett's fracture
Colles' fracture
Barton's fracture