Male Shoulder, Lateral View

Description

From a lateral profile, the rounded contour of the shoulder is formed by the deltoid muscle draping over the greater tubercle region of the proximal humerus, with the acromion projecting superiorly from the scapular spine. Deep to that superficial cap, the glenohumeral joint sits medial to the humeral head and lateral to the glenoid cavity, while the scapular girdle (scapula and clavicle) frames the superior thorax. Anteriorly, the anterior axillary fold is suggested by pectoralis major as it courses toward the humerus, and inferior to the deltoid the axillary region defines the transition to the upper limb. Lateral shoulder views matter because they clarify where surface anatomy tracks the underlying joint and bony landmarks you palpate in clinic. The relationship between the deltoid’s lateral bulk and the acromion helps localize the subacromial space, the typical pain generator in rotator cuff tendinopathy and subacromial bursitis, and it supports teaching of impingement mechanics during abduction. That same topography guides safe intramuscular deltoid injection placement in the mid-deltoid, a few centimeters inferior to the acromion, away from the axillary nerve as it traverses deep to the deltoid near the surgical neck of the humerus. A common teaching pitfall. Use this artwork for musculoskeletal anatomy courses introducing the shoulder girdle, for clinical skills manuals covering palpation landmarks and injection technique, or for patient-facing education on rotator cuff disease and shoulder pain localization. Anatomical accuracy verified by SciePro's Medical Advisory Board.