Rotator cuff Musculature

It consists of four main muscles. They are discussed below:

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SUPRASPINATUS MUSCLE

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ORIGIN
Supraspinous fossa of scapula.
INSERTION
Superior facet of greater tubercle of humerus.
ARTERY
Suprascapular Artery.
NERVE
Suprascapular Nerve.
MOVEMENT
Abduction of Arm.

INFRASPINATUS MUSCLE

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ORIGIN
Infraspinous fossa of scapula.
INSERTION
Middle facet of greater tubercle of humerus.
ARTERY
Suprascapular Artery and Circumflex Scapular Arteries.
NERVE
Suprascapular Nerve.
MOVEMENT
Lateral Rotation of Arm.

TERES MINOR MUSCLE

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ORIGINLateral Border of Scapula.
INSERTION

Inferior facet of greater tubercle of humerus.
ARTERY
Posterior Circumflex Humeral Artery and Circumflex Scapular Arteries.
NERVE
Axillary Nerve.
MOVEMENT

Lateral Rotation of Arm.

SUBSCAPULARIS MUSCLE

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ORIGIN

Subscapular fossa of scapula.
INSERTION
Lesser tubercle of humerus.
ARTERY
Subscapular Artery.
NERVE
Upper and Lower Subscapular Nerve.
MOVEMENT
Internal Rotation and Adduction of Arm.

CLINICAL SIGNIFICANCE

Following Pathological Conditions are associated with Rotator Cuff :

Rotator Cuff Tendinopathy

Rotator Cuff Tear

Rotator Cuff Impingement

Rotator Cuff Exercise

Rotator Cuff Stretching

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