little leader's elbow

…If a player stops playing baseball at an early stage, he or she may be able to return to normal, but if the player continues playing too hard, it can lead to serious elbow problems, such as osteochondritis dissecans, a condition where part of the joint surface falls off. Some people are calling this condition in youth baseball "little leaguer's elbow" and are issuing strong warnings. In youth baseball, there are strict restrictions on the number of pitches and the type of pitch (no curveballs allowed), so it is necessary to protect the fragile elbows of players in the growing stage. …

*Some of the terminology that refers to "little leaguer's elbow" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…軽い時期に野球を中止させると元に戻りうるが，無理して続けると，先に述べた離断性骨軟骨炎といった関節面の一部が脱落するような状態をはじめ，強いひじの障害を起こしてしまう。こうした少年野球によるものをとくにlittle leager’s elbowと呼んで，強い警告を発している人もいる。少年野球では投球数の制限，球種の制限(カーブを投げてはいけない)などの厳重な規制で，成長期の脆弱（ぜいじやく）なひじを守ってやる必要がある。…

※「little leager's 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