Definition of rotator cuff in English:

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rotator cuff

noun

Anatomy , chiefly North American
A tough sheath of tendons and ligaments that supports the arm at the shoulder joint.
Example sentences
  • The rotators of the hip are like the rotator cuff of the shoulder.
  • You don't need to be a major-league fastballer to have problems with your rotator cuff - the sheath of muscle that connects your arm to your shoulder.
  • Tendinitis of the shoulder, particularly the rotator cuff, is prevalent among swimmers and athletes who perform repeated overhead motions.
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