Research Progress on Incision Design of Modified External Dissection and Internal Ligation for Mixed Hemorrhoids

Mixed hemorrhoid is a common disease in anorectal department,so far,one of the most widely usedsurgical methods is external dissection and internal ligation . The traditional operation is effective, butpostoperative complications such as traumatic edge edema,pain and anal stenosis often occur .In recent years,with the deepening of the understanding of the pathogenesis and anatomy and physiology of hemorrhoids,awide variety of improved surgical methods have been derived from the external dissection and internal ligation inclinical practice,which reduces the severity of postoperative complications of traditional external dissection andinternal ligation .By referring to the domestic literature in the past 5 years,the following review is made on theincision design of external hemorrhoids in various improved surgical methods based on external dissection andinternal ligation,aiming to further analyze the incision design strategy of external dissection and internal ligationin clinical treatment of mixed hemorrhoids,and provide practical reference for medical practice.