Clavicle of a Human Male as, Posterior View

Description

Oriented in posterior aspect, the human clavicle is presented from its acromial (lateral) extremity to its sternal (medial) extremity, with the flattened lateral third transitioning to the more rounded shaft medially. Along the inferior-posterior surface near the lateral end, the conoid tubercle and trapezoid line outline the attachment sites for the coracoclavicular ligament complex, positioned medial to the acromial articular facet for the scapula. Medially, the sternal end broadens for the sternoclavicular joint, where the clavicle meets the manubrium and first costal cartilage. Short and stout. Posterior orientation clarifies why the clavicle functions as a strut between sternum and scapula while still permitting scapulothoracic motion, and it highlights the ligamentous restraints that stabilize the acromioclavicular region. Orthopedic fixation planning often hinges on the morphology of the lateral third, where displaced fractures can be pulled superiorly by the sternocleidomastoid medially and inferiorly by the weight of the upper limb laterally, with coracoclavicular ligament injury determining whether the acromioclavicular joint will remain reduced. This is also the bony corridor surgeons must respect during plate placement to avoid encroaching on the subclavian vessels and brachial plexus that course inferior to the midshaft. Useful for upper limb anatomy teaching when introducing the sternoclavicular and acromioclavicular joints, and for clinical manuals discussing clavicle fracture patterns, AC joint separation, and coracoclavicular ligament reconstruction landmarks. A practical figure for exam questions that test side determination from posterior surface features and ligament attachment sites. Anatomical accuracy verified by SciePro's Medical Advisory Board.