大骨节病是一种病因尚不清楚的地方性、多发性、变形性骨关节病。20世纪70年代,开展流行病学调查,确定了通辽市开鲁县3个乡(保安、幸福、辽河)为松辽平原大骨节病区。经过30多年的投硒、改水、换粮等综合性防治措施,取得了显著成效,使大骨节病病情得到了有效控制。2008年,为了 Kashin-Beck disease is a local cause, etiology, multiple, degenerative osteoarthritis. In the 1970s, epidemiological investigation was carried out to determine that the three townships (security, happiness, Liaohe) in Kailu County of Tongliao City are the Kaschin-Beck disease in the Songliao Plain. After 30 years of selenium, water, food for a comprehensive prevention and treatment measures, and achieved remarkable results, so that the condition of Kashin-Beck disease has been effectively controlled. In 2008, in order to