frozen shoulder

…It is divided into an acute phase, in which pain is the main symptom, and a chronic phase, in which movement is significantly restricted. The former is the painful muscle spasm phase, and the latter is the muscle contracture phase, which is called a frozen shoulder. The shoulder joint is connected to the ball-shaped head of the humerus in the small glenoid cavity of the scapula. …

*Some of the terminology that mentions "frozen shoulder" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…疼痛が主体の急性期と運動制限が著しい慢性期に分けられる。前者が疼痛性筋痙縮期，後者が筋性拘縮期で凍結肩frozen shoulderと呼ばれる。　肩関節は肩甲骨の小さな関節窩（か）に球状の上腕骨頭が接続している。…

※「frozen shoulder」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