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Rhomboid major and minor

Origin

Nuchal ligaments, spinous processes of the C7 to T5 vertebrae

Insertion

Medial border of the scapula

Action(s)

Retracts the scapula and rotates it to depress the glenoid cavity. It also fixes the scapula to the thoracic wall.

Nerve Supply

Dorsal scapular nerve (C4 and C5)

Arterial Supply

Dorsal scapular artery

Physical Exam

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Clinical Importance

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Disease States

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Discussion

Structure (Rhomboid major):

The rhomboid major arises from the spinous processes of the thoracic vertebrae T2 to T5 as well as the supraspinous ligament. It inserts on the medial border of the scapula, from about the level of the scapular spine to the scapula's inferior angle.

The rhomboid major is considered a superficial back muscle. It is deep to the trapezius, and is located directly inferior to the rhomboid minor. As the word rhomboid suggests, the rhomboid major is diamond-shaped. The major in its name indicates that it is the larger of the two rhomboids.

Figures

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Credits:

From Wikipedia: Rhomboid major and minor

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