Muscles and Bones of the Back, Black

Description

Posterior trunk anatomy is presented with emphasis on the superficial and deep layers across the cervicothoracic junction and upper lumbar region. Superiorly, the trapezius spans from the external occipital protuberance and nuchal ligament to the spine of the scapula and acromion, overlying the levator scapulae and rhomboid major and minor along the medial border of the scapula. Inferior and lateral to this, the latissimus dorsi fans superolaterally from the thoracolumbar fascia toward the humerus, while the deltoid caps the posterolateral shoulder; between the scapular spine and inferior angle, infraspinatus and teres major occupy the posterior scapular surface and lateral border, adjacent to the posterior axillary fold. Midline bony landmarks remain readable, including the spinous processes and posterior elements of the vertebral column. A posterior view like this is the workhorse for teaching scapulothoracic mechanics, because you can track how trapezius and serratus anterior force couples (with the latter inferred deep on the thoracic wall) drive upward rotation during arm elevation, and how weakness or pain patterns alter scapular position. It also supports clinical localization: the medial border region overlying the rhomboids is a frequent site of myofascial pain, while the quadrangular space (bounded by teres minor, teres major, long head of triceps, and humerus) frames the pathway of the axillary nerve and posterior circumflex humeral artery. Clear surface and osseous landmarks aid correlation with palpation of the scapular spine, inferior angle, and paraspinal midline. Use this artwork for gross anatomy and kinesiology modules on the back and shoulder girdle, for orthopaedic or sports medicine texts discussing scapular dyskinesis, and for patient education materials on posture-related upper back pain and rotator cuff adjacent anatomy. It also fits surgical overviews that reference posterior shoulder approaches and safe zones around the scapula and posterior axilla. Anatomical accuracy verified by SciePro's Medical Advisory Board.