The presence of pressure pain in the area of the large and small foramina is one of the clinical manifestations of sciatic hernia. The prolapse of abdominal organs or tissues through the large and small foramina of the sciatic bone is called sciatic hernia (sciatichernia). What are the examination methods of sciatic hernia? 1, abdominal plain film The abdominal photograph taken without introducing any contrast is called abdominal plain film. The density of the organs in the abdominal cavity are all soft tissue densities and lack natural contrast. However, when a certain organ is calcified due to disease or there is a foreign body or stone that is impervious to X-ray, or when there is free gas in the abdominal cavity, or when there is an increase in gas or fluid in the intestinal cavity or when there is dilatation of the intestinal canal, there will be a difference in density and it will be shown on the photograph. In addition, under normal conditions, the fatty layer of the abdominal wall, the fatty layer around the kidneys and the shadow of the psoas major muscle can also be shown on the radiographs. The abdominal plain radiographs include upright anteroposterior, upright lateral, supine anteroposterior, lateral horizontal and supine horizontal lateral. Among them, the upright anteroposterior view can show the free gas under the diaphragm, the fluid level in the intestinal or abdominal cavity, and the gas-liquid level in the liver or abdominal abscess. The upright lateral position is suitable for the localization of intra-abdominal masses, abscesses, calcifications, and stones. In infants with intestinal obstruction, the small intestine and colon are not easily distinguished and this position can be applied to identify them. The supine anterior-posterior position can clearly show the distribution of dilated intestinal curves, the degree of dilatation and the distance between intestinal walls. The supine horizontal position is suitable for examining patients who are critically ill and cannot stand and need to know whether there is free gas in the abdominal cavity or fluid level in the intestinal cavity and whether there is fluid in the abdominal cavity. The supine horizontal lateral position is suitable for patients who are critically ill and should not be turned much, it can show a small amount of pneumoperitoneum and intestinal gas and fluid plane, and at the same time can determine the location of abscess, etc. 2.Abdominal ultrasound Abdominal ultrasound can quickly check the size and shape changes of liver, gallbladder, bile duct, spleen, pancreas, kidney, adrenal gland, bladder, prostate and other organs, whether they are in normal position, whether they are compressed by surrounding tumors or organs, determine exactly the location of intra-abdominal masses and their relationship with surrounding organs, accurately identify whether the masses are substantial or fluid cysts, hematomas and abscesses, etc. It can also identify whether the tumor is benign or malignant. Routine blood test is the most general and basic blood test. Routine blood tests are usually performed with peripheral blood, such as blood from the fingertips and earlobes. After the blood cell analysis instrument, the computer reports the results, and this item has become a practice to examine patients. Blood consists of two major parts, liquid and tangible cells, and routine blood tests are performed on the cellular part of the blood. Blood has three different functions of cells – red blood cells (commonly known as red blood cells), white blood cells (commonly known as white blood cells), and platelets. Diseases are determined by observing changes in number and morphological distribution. It is one of the common auxiliary tests used by doctors to diagnose the condition.