chipped elbow

…Pain in the elbow caused by pitching a baseball is called baseball elbow, but it is well known that elbow disorders occur in people who have practiced particularly hard, and it is a type of overuse syndrome. In general, it is a general term for various elbow disorders caused by pitching a baseball, but one of them, osteochondritis dissecans, in which part of the joint surface becomes detached, is called chipped elbow or baseball elbow, and some people use the term only to refer to baseball elbow. The movement of pitching a baseball is a fairly complex and difficult movement that goes from the rise phase to the acceleration phase to the follow-through phase, and especially during the acceleration phase, a pulling force is applied to the inside of the elbow, making it easy to injure the inside. …

*Some of the terminology explanations that mention "chipped elbow" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…野球の投球によるひじの痛みを野球ひじと呼んでいるが，とくに熱心に練習に励んだ人にひじの障害がみられることはよく知られており，一種の使過ぎ症候群である。一般には野球の投球による各種のひじの障害を総称しているが，そのなかの一つ離断性骨軟骨炎という関節面の一部が遊離した状態になったものをchipped elbowとかbaseball elbowと呼び，野球ひじを限定した疾患のみに用いる人もある。　野球の投球という動作は，立ち上がり期から加速期を経てフォロースルー期となる，かなり複雑で無理な運動であるが，とくに加速期ではひじの内側に引張り力が働き，内側を傷めやすい。…

※「chipped elbow」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報