Shoulder is the area in the proximal part of the arm connecting it to the thoracic skeleton. There are connections to the sternum through the scapula and clavicula. Clavicula extremitas lateralis is connected to the acromion region of the scapula with strong ligaments.
Clavicula is attached to the first costa by the costoclavicular ligament. Also, it is connected to the sternum via sternoclavicular ligament. It gains mobility through the joints at both ends. The acromioclavicular ligament and acromioclavicular joint at its lateral end provide strong connections.
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