Serratus Anterior

Description

Serratus anterior

Diagram showing the origin and insertion of serratus anterior muscle. Serratus anterior originates from the upper eight ribs and is inserted into the medial border of the scapula (dotted area).

General

• Serratus Anterior
• Boxer's muscle
• Big swing muscle

General

• Fan shaped muscle on the thorax which aids in scapular movement

Origin

• Outer surface of the Ribs 1 - 9/9

Insertion

• Costal aspect of medial margin of Scapula

Actions

• Protracts, stabilizes scapula
• Assists in upward rotation

Vascular Supply

• Lateral Thoracic Artery
• Superior Thoracic Artery (upper part)
• Thoracodorsal Artery (lower part)

Innervation

• Long Thoracic Nerve

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Clinical Significance

Pathology

• Winged Scapula

Procedural

• Serratus Anterior Nerve Block

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See Also

• Physical Exam Shoulder
• Shoulder Anatomy (Main)
• Shoulder Pain (Main)

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