The human
shoulder is made up of three bones: the
clavicle (collarbone), the
scapula (shoulder blade), and the
humerus (upper arm bone) as well as associated muscles, ligaments and tendons. The articulations between the bones of the shoulder make up the shoulder
joints. The
shoulder joint also known as the glenohumeral joint, is the major joint of the shoulder, but can more broadly include the
acromioclavicular joint. In
human anatomy, the shoulder joint comprises the part of the body where the
humerus attaches to the
scapula, the head sitting in the
glenoid cavity. The shoulder is the group of structures in the region of the joint.