For the majority of patients with lumbar spine diseases, lumbar circumference is an extremely important part of the treatment of lumbar spine diseases. It is important for the prevention of lumbar spine diseases, slowing down the progress of the disease, aiding treatment and promoting rehabilitation. Lumbar spine diseases are predominantly caused by lumbar disc herniation. For lumbar disc herniation, whether it is the early symptom period, no obvious lower limb activity and sensory impairment; or acute onset of lumbar leg pain, rapid progress of symptoms; or serious symptoms, after taking surgery, lumbar circumference plays a role that cannot be ignored. The following is a detailed description of the precautions for choosing and wearing a waist brace. What is a waist brace? The lumbar girth is one of the commonly used orthopedic supports, and its main role is braking and protection. Braking is to restrict the activities of the lumbar spine, especially to assist the muscles of the low back to restrict some meaningless forward flexion movements to ensure that the injured disc can get sufficient rest. Especially in patients with acute lumbar disc herniation episodes, the acute inflammatory response of the lumbar spine localization can cause different degrees of spasm in the paravertebral muscles. After wearing the lumbar circumference correctly, the discomfort caused by inflammatory stimulation can be significantly reduced and the progression of the disease slowed down due to the reduction of lumbar activities. It protects, strengthens the stability of the lumbar spine, reduces lumbar back muscle strain, reduces the burden on the ligaments around the lumbar spine, and reduces the force on the spine by 25%, which means that 1/4 of the force is not transmitted to the pelvis through the lumbar girth instead of through the lumbar region. To a certain extent, it relieves and improves the pressure in the intervertebral space, so that the pressure of the intervertebral disc on the nerve root is relieved to a certain extent, which is conducive to the absorption of inflammation and edema of the nerve root. Therefore, when patients with lumbar disc herniation start to move on the ground after bed rest, traction treatment or surgery, they often wear lumbar aprons to enhance protection and consolidate the effect of the previous treatment. How to choose the right lumbar girth? ①The size of the waist circumference should be compatible with the length and circumference of the waist, and the upper edge should reach the lower edge of the ribs and the lower edge to the hip cleft; ②The rear side of the waist circumference should not be excessively convex, and a flat or slightly forward convexity is sufficient; ③Do not choose a waist circumference that is too narrow at the top and bottom to avoid excessive convexity of the lumbar vertebrae, and do not use a waist circumference that is too short on the left and right to avoid excessive tightness of the waist and abdomen and discomfort. What is the correct time to wear a lumbar girth? When the symptoms are mild, the patient can wear the lumbar girth only when he/she needs to stand for a long time, keep a posture of sitting or needs to put pressure on the waist, and take it off when lying down or resting; ②When the symptoms are severe, it should be worn strictly (put it on when getting up and standing) and not taken off at will; ③Patients after lumbar spine surgery, the lumbar girth must be worn when sitting up and getting out of bed after surgery. After the symptoms gradually subside and the preoperative signs gradually return to normal, the lumbar girth should be removed and the normal activities of the waist should be gradually restored, and the general wearing time should be 6 to 8 weeks, not more than 3 months. How to carry out correct rehabilitation exercises after removing the lumbar girth? Patients after lumbar spine surgery should not be overly dependent on the lumbar girth. Inappropriate long-term wearing of the lumbar girth will cause a decrease in muscle and joint mobility, secondary to disuse atrophy of the muscles, different degrees of straightening of the joints of the lumbar spine, and stiffness and weakness of the lumbar region, which will, on the contrary, aggravate the symptoms and even cause new injuries. Therefore, it is mostly recommended clinically that postoperative patients gradually increase the lumbar back muscle exercise during the use of lumbar girth, under the guidance of doctors, to prevent or reduce the lumbar muscle atrophy. After the lumbar girth is released, gradually resume the normal activities of the lumbar region and take the initiative to strengthen their own lumbar back muscle exercises. The exercise of lumbar back muscles in patients with lumbar disc herniation is mainly the exercise of posterior extension of the spine, including the five-point support arch bridge in the supine position and the head-thorax posterior extension method and the flying swallow method in the prone position. The exercise of the abdominal muscles is mainly for the exercise of forward flexion of the spine, including supine supine sit-up method. Five-point support arch bridge type: for low back muscle strength is weak or obese, each action to maintain 3-5 seconds, can be practiced more than ten times a day to more than a hundred times, in 3 to 5 groups to complete. Cephalothoracic back extension method: each action to maintain about 10-30 seconds, do 5-10 times in a row. Flying swallow pose: one of the best ways to exercise the low back muscles, each time last 3-5 seconds, and then muscle relaxation rest for 3-5 seconds, this is a cycle. Generally do 20-30 times at a time, lasting about 5 minutes. Exercise should be noted that it must be done in the symptom relief period, avoiding the acute pain period. If the discomfort of back pain occurs, exercise should be stopped immediately and rest. The number and intensity of exercise methods vary from person to person, pay attention to gradual progress, and gradually increase the amount of exercise each day. If you feel soreness and stiffness in your lower back the next day after exercise, you should reduce the intensity and frequency of exercise appropriately to avoid aggravating the symptoms. Do not suddenly exert too much force when exercising to prevent sprains.