Dorsolateral view, left side

Cat information:
supraspinatus
origin:  supraspinous fossa of scapula
insertion:  greater tubercle of humerus
nerve:  suprascapular
action:  extension of arm

Posterior view, right side Posterior view of origin, right side
Anterior view of insertion, right side

Human information:
supraspinatus (rotator cuff)
origin:  medial 66.7% of supraspinous fossa
        of scapula
insertion:  greater tubercle of humerus and
        capsule of shoulder joint
nerve:  suprascapular (C5 and C6)
action:  abduction of arm

This is one of the four rotator cuff muscles.  The above drawings of the origin and insertion might help visualize this information (red is the origin, blue the insertion).

COPYRIGHT 2008 by William C. Johnson II
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