Within each joint, protective cartilage covers the ends of the bones to provide a smooth surface for painless joint motion. However, the cartilage itself is susceptible to injury. Once injured, the damaged cartilage can cause pain and inflammation in the shoulder joint, as well as physical limitations. Cartilage has no blood supply, therefore, it cannot heal on its own. A simple crack or fissure will continue to progress until the cartilage wears down completely, resulting in arthritis with pain, stiffness, and other joint symptoms.
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