Rhomboid Minor

Description

Posterior cervical and upper thoracic anatomy is presented with the rhomboid minor isolated deep to the trapezius in a male upper back. The rhomboid minor spans from the nuchal ligament and spinous processes of C7 to T1 to the medial border of the scapula at the level of the scapular spine, lying superior to rhomboid major and inferior to levator scapulae. Medially, its fibers arise from the midline; laterally, they course inferolaterally to insert on the dorsal surface of the scapula, adjacent to the scapulothoracic interface. Rhomboid minor matters because it is a small muscle with outsized teaching value for scapular mechanics: it retracts the scapula and contributes to downward rotation, opposing excessive protraction during reaching and pushing. Weakness or pain in the rhomboid region often reflects scapular dyskinesis or overuse in rowing and overhead sports, while iatrogenic injury risk rises during posterior approaches to the medial scapular border and during dissection of the trapezius plane. Understanding its relationship to the dorsal scapular nerve (C5) along the medial scapular border helps clinicians explain medial scapular pain and subtle winging patterns that do not match long thoracic nerve palsy. A small landmark. Use this artwork in gross anatomy and kinesiology modules to distinguish rhomboid minor from trapezius, levator scapulae, and rhomboid major, and in sports medicine or orthopedic texts discussing scapular retraction and posture-related myofascial pain. It also supports surgical education on posterior scapular exposure and safe dissection planes in the dorsal neck and upper back. Anatomical accuracy verified by SciePro's Medical Advisory Board.