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肛门肛门是消化道末端开口,位于臀部正中线会阴体与尾骨之间。紧闭呈一前后纵裂,排粪时张开成圆形,直径可达3厘米。肛门缘向后至尾骨尖之间有肛门尾骨韧带。脓肿切开时,切断韧带可造成肛门向前移位。肛门缘皮肤比较松弛。手术时,切除皮肤过多可造成肛门狭窄。皮下组织直接与坐骨直肠窝脂肪组织相连,发生脓肿时,炎症可沿脂肪小叶间隔蔓延。如形成瘘管则行径曲折。
Anal anus is the end of the opening of the digestive tract, located in the midline between the vulva and coccyx. Tight closed before and after longitudinal split, defecation open into a circle, up to 3 cm in diameter. Anus tail coccyx ligament posterior to the coccyx between the anal margin. Abscess incision, the ligament cut can cause the anus forward displacement. Anal edge skin is more relaxed. Surgery, removal of the skin can cause anus stenosis too much. Subcutaneous tissue directly connected with the ischial rectal fossa fat tissue, the occurrence of abscesses, inflammation can spread along the fat lobules. Such as the formation of fistula tortuous path.