Questions Answered Here Introduction See Also Bones & Joints of the Shoulder Girdle Some sources define the shoulder girdle as having two bones: the collarbone and shoulder blade. Some also include the humerus (upper arm bone). Clavicle / Collarbone Scapula / Shoulder Blade The Shoulder Joint / Glenohumeral (GH) Joint Other Joints Acromioclavicular (AC) Joint...