First, let’s take a basic overview. Anatomy of the scapula is often taught alongside the humerus, since they are the two primary bones of the shoulder joint. Check out the video below, which takes you through the anatomy of the scapula including its bony landmarks and relation to surrounding structures, like the humerus.
The scapula is commonly referred to as the shoulder blade. It connects the humerus bone of the arm to the collarbone. There are only three muscles that are responsible for enabling the movement of the shoulder blade.
Protraction and retraction of the scapula assist with movement of the pectoral girdle and chest muscles both forward and back, respectively. Elevation and depression of the scapula assist with the movement of the entire shoulder capsule up and down, seen in motions such as shrugging of the shoulders.