肛门病俗称痔疮,是人类的常见多发病。人的体位与肛门病的发生有十分密切的关系。日常生活中,人的常见体位有坐、蹲、行、立、卧几种。人每天大部分时间处于直立姿势,或坐、或蹲、或行、或立。当人直立时,位于躯干下部的肛门直肠低于心脏,血液回流困难,加上人固有的解剖上的弱点如直肠上静脉及其分支没有静脉瓣,血液由下向上穿过直肠肌层向心脏回流时,在地心吸引力的影响下,肛门直肠部很容易发生血液回流受阻而致局部血液瘀积,使静脉 Anal disease commonly known as hemorrhoids, is a common human frequently-occurring disease. Human body position and the occurrence of anal disease are very closely related. In daily life, people have a common body position to sit, squat, line, legislation, lying several. People stand upright most of the day, or sit, or squat, or row, or stand. When the person stands upright, the anorectal lower part of the torso is lower than the heart and the blood is difficult to return to the heart. Combined with the inherent anatomical weakness such as the rectal vein and its branches without venous valves, the blood flows downwards through the rectal muscle to the heart Reflux, under the influence of the geocentric attraction, the anorectal department is prone to blocked the blood back to local blood stasis, the veins