shoulder joint

Researchers can precisely measure previously unquantifiable aspects of pitching—everything from the angular velocity of the arm at the shoulder joint to tension on the knees and elbows.

研究者可以精确地测量出先前无法量种有关投球方面数据——从肩关节部位手臂移动角度速度，膝盖和手肘张力。

Periarthritis of shoulder joint can be called frozen shoulder also,is a kind of disease having no clear and organic pathologic change with shoulder ache and hypoactivity as characteristic.

肩周炎是以肩关节疼痛和活动障碍为常见病。对肩周炎治疗差异较大,其效果也不一致。