The Rotator Cuff


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Four tendons provide stability holding the humeral head into the glenoid and provide a fulcrum around which the shoulder muscles can move the ball and socket.

  • Supraspinatus – helps lift or abduct the shoulder
  • Infraspinatus – helps lift and externally rotate the shoulder
  • Teres Minor – helps externally rotate the shoulder
  • Subscapularis – helps internally rotate the shoulder

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