The glenohumeral joint is perhaps the most recognizable component of the shoulder. This is the only joint among the four joints within the shoulder that features a ball-and-socket construction. The glenohumeral joint is located where the rounded head of the arm’s humerus bone meets the shoulder blade, and is stabilized by the surrounding rotator cuff muscles.
The glenohumeral joint allows a wide range of motion for the arm. However, this flexibility renders it susceptible to wear and tear of the cartilage, leading to glenohumeral osteoarthritis in the shoulder.