The acromioclavicular (AC) joint is a joint between your clavicle and the outermost edge of your scapula (shoulder blade). Ligaments hold these two bones together. There is also a flexible ...

Ball and socket joint. Articulating bones are humerus and scapula (the clavicle is not part of the shoulder joint). Allows a great range of movement in all directions. Many muscles are used to ...