Subscapularis is one of the four rotator cuff muscles. The muscle also acts to hold the head of the humerus in position and prevents it moving forwards.


  • Anterior (costal) surface of the scapula


  • Lesser tuberosity of the humerus


  • Internal rotation
  • Adduction


  • Upper and lower subscapular nerves

Daily uses

  • Tucking the back of your shirt into your trousers

How can I stretch it?

  • External shoulder rotation stretch


How can I strengthen it?

Internal shoulder rotation with a dumbbell


More Human Muscles: