Name

# Rhomboid Major

Pronunciation

(rom-BOID)

Origin/Proximal Attachment

Spinous processes of T2-5, supraspinous ligament

Insertion/Distal Attachment

Medial border from scapular spine to inferior angle

Action/Relevance

Retracts & stabilizes the scapulaAssists to downwardly rotate the scapula

Innervation

Dorsal scapular nerve (C5)

Notes

The Rhomboideus major arises by tendinous fibers from the spinous processes of the second, third, fourth, and fifth thoracic vertebrę and the supraspinal ligament, and is inserted into a narrow tendinous arch, attached above to the lower part of the triangular surface at the root of the spine of the scapula; below to the inferior angle, the arch being connected to the vertebral border by a thin membrane. When the arch extends, as it occasionally does, only a short distance, the muscular fibers are inserted directly into the scapula.