If often sit hard bench, can cause ischiadic and nodal sex slippery bursa is phlogistic, especially the old person with emaciated body is more incidental such injury.

• 假如老坐硬板凳，就会诱发坐骨结节性滑囊炎，尤其是身体瘦弱的老人更轻易发生这样的损伤。