The clinical knee-chest position is primarily indicated for the examination and treatment of rectal and anal canal diseases. For benign rectal diseases such as hemorrhoids, anal fistulas, anal fissures and rectal polyps, a preliminary diagnosis can be made by visualization and palpation. For patients with hemorrhoids of grade III or higher, the knee-chest position can also be used for hemorrhoidectomy, fistula stitching, partial rectal polyp removal, and excision of fissure wounds. The patient kneels on the examination bed with both knees flexed at right angles, head, neck and anterior chest pillows, both forearms flexed in front of the chest, elbow joints against the bed, hips elevated, both knees slightly apart, thighs perpendicular to the bed, 60° to the knee joint, head tilted to the side. This position is the most commonly used position to check the rectum and anus, and is also a routine position for prostate massage, but should not be used for elderly and frail patients