Final answer:
The glenohumeral joint has more mobility than stability due to its loose articular capsule and lack of structural support.
Step-by-step explanation:
The glenohumeral joint, also known as the shoulder joint, has more mobility than stability. This joint allows for a wide range of motions, including flexion/extension, abduction/adduction, circumduction, and medial/lateral rotation of the humerus. The glenohumeral joint is a ball-and-socket joint formed by the articulation between the head of the humerus and the glenoid cavity of the scapula.
However, this increased mobility comes at the cost of stability. The articular capsule surrounding the glenohumeral joint is relatively thin and loose, and the support is primarily provided by the muscles crossing the joint, such as the rotator cuff, rather than strong ligaments. This lack of structural support results in a trade-off between mobility and stability.