Rotator Cuff Injury Facts. The rotator cuff is made up of four muscles that help move and stabilize the shoulder joint. Damage to any or all of the four muscles and the ligaments that attach these muscles to bone can occur because of acute injury, chronic overuse, or gradual aging.
China, officially the People's Republic of China (PRC), is a sovereign state in East Asia. With a population of over 1.381 billion, it is the world's most populous state. The state is governed by the Communist Party of China based in the capital of Beijing.
Explore the map of China, the most populous and fourth largest country in the world by total area. China is officially known as the People's Republic of China (PRC) and is located in East Asia. It is the world second largest economy by nominal GDP and GDP (PPP) and also the largest importer and exporter of goods.