The discovery of 1.5-million-year-old bone tools in Tanzania suggests early human ancestors had advanced cognitive abilities and systematically crafted tools from bone much earlier than previously ...

An AC joint is the acromioclavicular joint, the joint between the acromion of the shoulder blade and clavicle, the collarbone. It is a joint that provides stability and flexibility to the shoulder ...

The sternoclavicular joint, at the top of the chest, connects the sternum (breastbone) with the clavicle (collarbone). The acromioclavicular joint (AC joint) is where the acromion (the upper rear tip ...

Medically reviewed by Jennifer Steinhoff, MD Collarbone pain is usually caused by an injury, such as a fracture or joint ...