Muscular System, Posterior View

Description

Posterior anatomy of the upper back is centered on the rhomboid minor and rhomboid major, highlighted bilaterally between the medial border of the scapula and the thoracic spinous processes. Fibers run obliquely inferolaterally from the vertebral column toward the scapula, lying deep to trapezius and superficial to the posterior thoracic wall. Surrounding bony landmarks include the scapular spine, medial border and inferior angle of the scapula, posterior ribs, and the cervical and thoracic vertebrae. Orientation is clear. Rhomboids are the workhorse scapular retractors and downward rotators, and this posterior relationship to the scapula explains why poor scapular control contributes to rounded-shoulder posture and altered glenohumeral mechanics. Clinically, these muscles are common generators of interscapular pain and myofascial trigger points, often confused with cervical radiculopathy or referred pain from the thoracic spine. Their position deep to trapezius also matters during posterior approaches and when interpreting electromyography or injections, because the superficial muscle layer can mask true rhomboid tenderness. Ideal for musculoskeletal anatomy teaching in gross anatomy and kinesiology courses, this illustration also supports orthopedic and sports medicine texts covering scapulothoracic rhythm, posture, and periscapular strengthening protocols. It also fits patient education materials on upper back pain patterns, ergonomic retraining, and rehabilitation after shoulder or neck strain. Anatomical accuracy verified by SciePro's Medical Advisory Board.