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Boxer's fracture
Boxer's Fracture is a colloquial term for a fracture of one of the metacarpal bones of the hand. Classically, the fracture occurs transversely across the neck of the bone, after the patient strikes an object with a closed fist. Alternate terms include Scrapper's fracture or Bar Room fracture.
As these are colloquial terms, texts and medical dictionaries do not universally agree on precise meanings. Various authorities state that a "Boxer's fracture" means a break in specifically the second metacarpal bone or third metacarpal bone,〔(【引用サイトリンク】website="Radiopaedia" )〕 with "Bar Room fracture" being specific to the fourth metacarpal bone or fifth metacarpal bone. Though some writers assert that Boxer's fracture and Bar Room fracture are distinct terms representing injuries to different bones, this distinction seems to have been lost over time and most medical professionals now describe any metacarpal fracture as a "Boxer's Fracture" .
==Signs and symptoms==
The symptoms are pain and tenderness in the specific location of the hand, which corresponds to the metacarpal bone around the knuckle. When a fracture occurs, there may be a snapping or popping sensation. There will be swelling of the hand along with discoloration or bruising in the affected area. Abrasions or lacerations of the hand are also likely to occur. The respective finger may be misaligned, and movement of that finger may be limited and painful.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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