The shoulder combines exceptional mobility with precise stability. The rounded head of the upper arm rests in a shallow socket, giving you the freedom to reach overhead, rotate, lift, throw, push, and pull.
That movement relies on a finely coordinated system. The rotator cuff guides and powers the joint, while the labrum, capsule, and ligaments maintain stability. Cartilage cushions the bones; the biceps tendon, bursa, and shoulder-blade muscles support smooth, controlled motion.
If any structure becomes inflamed, torn, stiff, unstable, or worn by arthritis, the shoulder may compensate in ways that spread pain or limit function. Because symptoms often overlap, an expert evaluation is essential to identify the true source of the problem and determine the right treatment for you.