Acromioclavicular, Sternoclavicular, and Clavicular Conditions

The acromioclavicular joint (AC joint), which connects the upper extremity to the axial skeleton, can be involved in shoulder issues, particularly in individuals in their 20s and 30s and in athletes. The SC joint, which connects the shoulder blade to the rest of the body, has an interarticular disc that increases stability and acts as a cushion between the bone ends.