Muscles and Bones of the Shoulder, Anterior View

Description

Anterior shoulder anatomy is presented with the clavicle spanning medially from the manubrial region toward the acromion, where it overlies the superior aspect of the glenohumeral region and meets the scapular acromion at the acromioclavicular joint. The deltoid forms the lateral “cap” of the shoulder, draping from the lateral third of the clavicle and acromion toward the humeral shaft, while pectoralis major lies anteromedially on the chest wall as it converges toward its humeral insertion. Superiorly, trapezius crosses the root of the neck to the shoulder girdle, and in the arm the biceps brachii occupies the anterior compartment with its tendon coursing distally, with triceps brachii visible posterolaterally as it approaches the olecranon. An anterior perspective like this is the workhorse for teaching surface anatomy and joint relationships around the clavicle, acromion, and proximal humerus, the same landmarks used when you palpate the AC joint, localize the bicipital groove, or plan a deltopectoral interval. Fiber direction and tendon continuity help clarify why deltoid dysfunction after axillary nerve injury flattens the shoulder contour, and why proximal biceps tendinopathy can refer pain to the anterior shoulder despite a seemingly normal glenohumeral exam. Short, clear landmarks. Real-world exam relevance. Use this plate in gross anatomy and kinesiology courses to anchor muscle actions to visible attachments, and in orthopedic or sports medicine texts discussing AC joint sprain, clavicle fracture alignment, or approaches for shoulder arthroplasty and open reduction. It also fits patient-facing surgical consent materials where you need a clean anterior map of the shoulder girdle without distracting posterior detail. Anatomical accuracy verified by SciePro's Medical Advisory Board.