Supraspinatus

supraspinatus

SHORT DESCRIPTION

• Musculo thick and has the shape of a triangular pyramid.

OCUPA

It extends from the supraspinatus fossa to the upper end of the humerus.

Goes below the:

• acromioclavicular joint
• And coracoacromial ligament

ORIGIN

• ¾ of the supraspinatus medial fossa and the deep surface of the fascia that covers it.

INSERTION

• superior facet of the greater tubercle.

INNERVATION : Nerve Suprascapular branch of the brachial plexus

FUNCTION

• Raises the arm sliding laterally, it's abductor.
• It acts as an active ligament of the shoulder joint.

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