大骨节病具有明显的地方性,其发生和流行与自然地理条件相关。全国病区呈东北、西南向,主要分布于湿润带和干旱带之间的过渡带。四川病区处于全国病带的西南段,不仅分布在西北部的中高山高原温带——高寒地区,而且盆地东部的亚热带地区也有灶状分布。在两种截然不同的自然地理环境中均有大骨节病发生,同时发病环境与非发 Kashin-Beck disease has obvious local, its occurrence and prevalence and natural geographical conditions related. The ward in the country was northeast and southwest, mainly distributed in the transitional zone between the humid zone and the arid zone. The Sichuan Ward is located in the southwestern segment of the national disease belt. It is not only distributed in the temperate-alpine region of the mid-high plateau in the northwest, but also in the subtropical region in the eastern part of the basin. Kashin-Beck disease occurs in two distinct physical and geographical environments, both environmental and non-fat