levator scapulae is the muscle that attaches to medial border of scapula (middle posterior lip).
what muscle attaches to medial border of scapula (middle posterior lip)?
levator scapulae
it is inserted into a small area of the medial border of the scapula at the level of the scapular spine.









































section::::action.









































together with the rhomboid major, the rhomboid minor retracts the scapula when trapezius is contracted. acting as a synergist to the trapezius, the rhomboid major and minor elevate the medial border of the scapula medially and upward, working in tandem with the levator scapulae muscle to rotate the scapulae downward. while other shoulder muscles are active, the rhomboid major and minor stabilize the scapula.









































section::::innervation and blood supply.
rhomboid minor muscle
the medial border extends from the lesser tubercle to the medial epicondyle. its upper third consists of a prominent ridge, the crest of the lesser tubercle, which gives insertion to the tendon of the teres major muscle. about its center is a slight impression for the insertion of the coracobrachialis muscle, and just below this is the entrance of the nutrient canal, directed downward; sometimes there is a second nutrient canal at the commencement of the radial sulcus. the inferior third of this border is raised into a slight ridge, the medial supracondylar ridge, which became very prominent below; it presents an anterior lip for the origins of the brachialis muscle and the pronator teres muscle, a posterior lip for the medial head of the triceps brachii muscle, and an intermediate ridge for the attachment of the medial intermuscular septum.
body of humerus