Trapezius & Rhomboid Muscles

Lower Trapezius - Insertion

Base of the scapular spine

Rhomboids (major & minor) - Innervation

Dorsal Scapular Nerve (C4, C5)

Upper Trapezius - Insertion

Lateral 1/3 clavicle and acromion

Rhomboids (major & minor) - Insertion

Medial border of scapula from root of spine to inferior angle

Middle Trapezius - Action

Scapular Retraction

Lower Trapezius - Action

Scapular depression, retraction, upward rotation

Upper Trapezius - Action

Scapular elevation and upward rotation Neck extension, sidebending and rotation opposite side

Rhomboids (major & minor) - Action

Scapular retraction, elevation and downward rotation

Lower Trapezius - Innervation

Spinal Accessory Nerve (C3 - C4)

Middle Trapezius - Innervation

Spinal Accessory Nerve (C3 - C4)

Upper Trapezius - Innervation

Spinal Accessory Nerve (C3 - C4)

Middle Trapezius - Insertion

Spine of scapula and acromion

Rhomboids (major & minor) - Origin

Spinous processes C7 - T5

Middle Trapezius - Origin

Spinous processes T1 - T5

Lower Trapezius - Origin

Spinous processes T6 - T12

Upper Trapezius - Origin

Superior nuchal line, external occipital protuberance, ligamentum nuchae