![]() Functionally, the rhomboid muscles retract, elevate and rotate the scapula. This group of muscles is important for the movement of the upper extremity and stabilization of the shoulder through articulation with the trunk. With the assistance of many other muscles, the rhomboids help form the shoulder girdle. The origin of the rhomboid muscles is from the spinous processes of the T2-T5 vertebra and inserts on the medial border of the scapula, just inferior to the rhomboid minor. ![]() The rhomboid major is a quadrangular muscle located inferior to the rhomboid minor. It inserts at the scapula's medial border near the base of the spine of the scapula. The rhomboid minor is a cylindrical muscle that originates at the ligamentum nuchae and C7 and T1 vertebra. The rhomboids consist of two separate muscles the major and minor muscles, which are found immediately deep to the trapezius.
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