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Muscle Name: Lateral Deltoid

Medical Name:

• Lateral Deltoid

Other Names:

• Middle Deltoid
• Side Deltoid

Head:

• None (Lateral part of the deltoid muscle group)

Movement:

• Abduction of the shoulder
  • Raising the arm out to the side

Attachment:

• Origin:
  • Acromion process of the scapula
• Insertion:
  • Deltoid tuberosity of the humerus

Related Muscles:

• Anterior Deltoid
• Posterior Deltoid
• Supraspinatus
• Trapezius

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