Scapulohumerol MusclesMade EasyJonathan Abesamis

May 18, 2010Ross University School of Medicine

Anatomy

Step 1: Draw the Bony Landmarks

• A) Draw a large rectangle on the left.

Step 1: Draw the Bony Landmarks

• A) Draw a large rectangle on the left.

Step 1: Draw the Bony Landmarks

• B) Draw a horizontal line near the top.

Step 1: Draw the Bony Landmarks

• B) Draw a horizontal line near the top.

Step 1: Draw the Bony Landmarks

• C) Draw another, thinner rectangle on the right.

Step 1: Draw the Bony Landmarks

• C) Draw another, thinner rectangle on the right.

Step 1: Draw the Bony Landmarks

• D) Draw 2 ovals, one bigger than the other, on the second rectangle.

Step 1: Draw the Bony Landmarks

• D) Draw 2 ovals, one bigger than the other, on the second rectangle.

Step 1: Draw the Bony Landmarks

• D) Draw 2 ovals, one bigger than the other, on the second rectangle.

Step 1: Draw the Bony Landmarks

• 3) Draw a small circle below the ovals on the right.

Step 1: Draw the Bony Landmarks

• 3) Draw a small circle below the ovals on the right.

Step 2: Label the Bony Landmarks

Step 2: Label the Bony Landmarks

Step 2: Label the Bony LandmarksSupraspinous Fossa

Step 2: Label the Bony LandmarksSupraspinous Fossa

Step 2: Label the Bony LandmarksSupraspinous Fossa

Infraspinous Fossa

Step 2: Label the Bony LandmarksSupraspinous Fossa

Infraspinous Fossa

Spine of the Scapula

Step 2: Label the Bony LandmarksSupraspinous Fossa

Infraspinous Fossa

Spine of the Scapula

Humerous

Step 2: Label the Bony LandmarksSupraspinous Fossa

Infraspinous Fossa

Spine of the Scapula

Humerous

Greater Tubercle

Step 2: Label the Bony LandmarksSupraspinous Fossa

Infraspinous Fossa

Spine of the Scapula

Humerous

Greater Tubercle

Lesser Tubercle

Step 2: Label the Bony LandmarksSupraspinous Fossa

Infraspinous Fossa

Spine of the Scapula

Humerous

Greater Tubercle

Lesser Tubercle

Deltoid Tuberosity

Step 3: Draw the Muscles

Step 3: Draw the Muscles

Step 3: Draw the MusclesDeltoid

Step 3: Draw the MusclesDeltoid

Step 3: Draw the MusclesDeltoid

Supraspinatus

Step 3: Draw the MusclesDeltoid

Supraspinatus

Step 3: Draw the MusclesDeltoid

Supraspinatus

Infraspinatus

Step 3: Draw the MusclesDeltoid

Supraspinatus

Infraspinatus

Step 3: Draw the MusclesDeltoid

Supraspinatus

Infraspinatus

Teres Minor

Step 3: Draw the MusclesDeltoid

Supraspinatus

Infraspinatus

Teres Minor

Step 3: Draw the MusclesDeltoid

Supraspinatus

Infraspinatus

Teres Minor

Teres Major

Step 3: Draw the MusclesDeltoid

Supraspinatus

Infraspinatus

Teres Minor

Teres Major

Step 3: Draw the MusclesDeltoid

Supraspinatus

Infraspinatus

Teres Minor

Teres Major

Subscapularis

Step 4: Recognize the Rotator Cuff Muscles

Step 4: Recognize the Rotator Cuff Muscles

Step 4: Recognize the Rotator Cuff Muscles

Supraspinatus

Infraspinatus

Teres Minor

Subscapularis

Step 4: Recognize the Rotator Cuff Muscles

Supraspinatus

Infraspinatus

Teres Minor

Subscapularis

A.K.A. “SITS”

Step 5: Actions – Group the Muscles into 3 sets of 2.

Step 5: Actions – Group the Muscles into 3 sets of 2.

• Group 1: Abduction

Step 5: Actions – Group the Muscles into 3 sets of 2.

• Group 1: Abduction

Step 5: Actions – Group the Muscles into 3 sets of 2.

Deltoid

Supraspinatus• Group 1: Abduction

Step 5: Actions – Group the Muscles into 3 sets of 2.

• Group 2: Lateral Rotation

Step 5: Actions – Group the Muscles into 3 sets of 2.

• Group 2: Lateral Rotation

Step 5: Actions – Group the Muscles into 3 sets of 2.

Infraspinatus

Teres Minor

• Group 2: Lateral Rotation

Step 5: Actions – Group the Muscles into 3 sets of 2.

• Group 3: Medial Rotation

Step 5: Actions – Group the Muscles into 3 sets of 2.

• Group 3: Medial Rotation

Step 5: Actions – Group the Muscles into 3 sets of 2.

Teres Major

Subscapularis

• Group 3: Medial Rotation

Step 5: Actions – Group the Muscles into 3 sets of 2.

Teres Major

Subscapularis

• Group 3: Medial Rotation

**Teres Major also adducts the humerous.

Step 6: Innervation – Group the Muscles into 3 sets of 2.

Step 6: Innervation – Group the Muscles into 3 sets of 2.

• Group 1: Axillary Nerve

Step 6: Innervation – Group the Muscles into 3 sets of 2.

• Group 1: Axillary Nerve

Step 6: Innervation – Group the Muscles into 3 sets of 2.

Deltoid

Teres Minor

• Group 1: Axillary Nerve (C5, C6)

(C5, C6)

Step 6: Innervation – Group the Muscles into 3 sets of 2.

• Group 2: Suprascapular Nerve

Step 6: Innervation – Group the Muscles into 3 sets of 2.

• Group 2: Suprascapular Nerve

Step 6: Innervation – Group the Muscles into 3 sets of 2.

Supraspinatus

Infraspinatus

• Group 2: Suprascapular Nerve (C4, C5, C6)

(C5, C6)

Step 6: Innervation – Group the Muscles into 3 sets of 2.

• Group 3: Subscapular Nerve

Step 6: Innervation – Group the Muscles into 3 sets of 2.

• Group 3: Subscapular Nerve

Step 6: Innervation – Group the Muscles into 3 sets of 2.

Teres Major

Subscapularis

• Group 3: Subscapular Nerve

Lower Subscapular n. (C4, C5, C6)

Lower & Upper Subscapular nn. (C5, C6, C7)

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