A common cause of perineal hernia is surgery involving the perineum. Those of the pelvic wall include&colon; sciatic hernia, obturator hernia and perineal hernia. The pelvic floor separates the pelvic cavity above from the perineal region (including perineum) below. Surgical approaches in rectal prolapse can be either perineal or abdominal. The urogenital diaphragm is reinforced posteriorly by the superficial transverse perineal. Anal sphincter defects, rectal prolapse, and abnormal perineal descent may be detected. Selective use of episiotomy results in less perineal trauma. The uterus is primarily supported by the pelvic diaphragm, perineal body, and urogenital diaphragm. In extreme cases, pudendal nerve entrapment can be a source of intractable perineal pain. Obstetric perineal trauma contributes to postpartum morbidity and frustration of women after delivery. Patients with prior history of vaginal or perineal surgery have higher complication rates. It is controlled by the deep perineal branch of the pudendal nerve. They also had some benefits, such as less urinary incontinence and less perineal pain. It separates the skin and subcutaneous fat from the superficial perineal pouch. Local stimulation can involve the clitoris, vagina and other perineal regions.