棘きょっ下か筋きん

noun

infraspinatus muscle

Anatomical term for the muscle of the rotator cuff that externally rotates the shoulder.

• 棘きょっ下か筋きんは肩かたの回かい旋せん筋きん腱けん板ばんの一ひとつです。

  The infraspinatus muscle is one of the rotator cuff muscles.