1 — Deltoid; 2 — Acromioclavicular joint; 3 — Trapezius; 4 — Investing layer; Superficial layer; 5 — Pretracheal layer; 6 — Sternohyoid; 7 — Sternoclavicular joint; 8 — Sternocleidomastoid; 9 — Pectoralis major; 10 — Conoid ligament; 11 — Coracoclavicular ligament; 12 = 10 + 11 — Trapezoid ligament; 13 — Acromial facet;14 — Subclavius; 15 — Costoclavicular ligament; 16 — Clavipectoral fascia;
17 — Sternal facet
