Shoulder Anatomy – Two Shoulder Joints

In reality there are two joints in the shoulder. We can see here the acromioclavicular joint.

Now this bone over here is the clavicle but this weird looking bone is the scapula. This part of the scapula is called the acromion and it articulates with the clavicle. So therefore the joint is called acromioclavicular joint. Now in order to see that second joint in the shoulder we would have to look at these bones from the posterior view and this bone over here is the humerus whereas this bone is the scapula. The joint between the scapula and the humerus is called the glenohumeral joint.