Low back pain is one of the most common symptoms in elderly patients. As the body’s endocrine and immune functions age, the normal composition of the spine changes and loses its normal mechanical characteristics, leading to an increased incidence of low back pain. About 60% of the elderly have experienced low back pain. Among them, 4% to 6% of the elderly are in serious condition. Low back and leg pain in the elderly accounts for more than 1/3 of the total number of outpatient orthopedic consultations in hospitals. According to Chinese medicine, the elderly people’s liver and kidneys are already deficient, and their kidney qi is already insufficient, and kidney deficiency is the root of the problem. The waist of the kidney, kidney deficiency is easy to invade the evil, “kidney deficiency is waist and foot pain”; on the other hand, the invasion of external evil, can also affect the lack of kidney qi, the two are the cause and effect of each other, so the elderly are prone to low back and leg pain. The etiology of lumbar and leg pain has three mechanisms: First, feel the external evil. The Spiritual Pivot – the beginning of the birth of a hundred diseases chapter ” day: “the people in the virtual evil, the transmission of the limbs is the joints through, waist and spine is strong.” The so-called virtual evil, for the positive gas is weak and feel the evil of the six evils. Elderly people are weak, Wei Yang insufficient, external evil into the interior, the meridian gas, so easy to produce waist and leg pain. Second, the flash frustration fall. Improper use of force, hold your breath flash frustration, strong weight lifting, violence, twisting, or fall fall can damage the meridians, resulting in qi and blood stagnation, stagnation of blood stasis and lumbar and leg pain. Third, labor injury to the kidneys. Old age and frailty, or prolonged illness, or gas deficiency, or congenital endowment deficiency, or uncontrolled housework, labor injury, resulting in loss of kidney gas, no moistening of the tendons and veins and lumbar and leg pain. Clinical observation, geriatric lumbar and leg pain is often induced by cold, exertion, exertion posture and other reasons, the elderly have a history of trauma is more common. Modern medicine believes that low back pain in the elderly is generally a symptom of degenerative changes in the lumbar spine. The causes of lumbar degenerative changes are complex and multifaceted, and can be summarized as follows: 1, long-term lumbar spine activity and load is too large, the posture is not correct The above reasons can cause the nucleus pulposus water and nutrients to reduce the volume of the intervertebral disc shrinks rapidly, the elasticity of the disc decreases, and then the spinal space becomes narrower, and the vertebral edge of the lip-like osteophytes are formed, which irritate and compress the surrounding tissues, especially the nerve tissues. This stimulates and compresses the surrounding tissues, especially the nerve tissues, thus producing the symptoms of low back and leg pain. 2.Endocrine disorders As we all know, endocrine function has a direct relationship with bone metabolism. For example, when sex hormone secretion is reduced or adrenocorticotropic hormone secretion is excessive, it can cause osteoporosis, ligament and joint capsule relaxation including lumbar vertebrae. On this basis, a sudden increase in the load on the lumbar spine may cause low back pain symptoms. 3, body shape change The normal human spine has four physiological curvature, namely, cervical and lumbar anterior convexity, thoracic spine and sacral vertebrae convex. The line of gravity of the human body through the lumbar vertebrae or the back of the intervertebral discs rather than through the synovial joints. If the elderly body type is too obese, the weight of the front part of the body increases, making the lumbar vertebrae convex, on the one hand, so that the articular synovial joints occur strain, causing degenerative changes; on the other hand, the lumbar extensors to adapt to the increase in the curvature of the convexity of the lumbar muscles gradually first relaxed, and then contracted, thus causing low back pain. If the elderly body type is too thin, not only the viscera are easy to prolapse, but also can cause the joint capsule, ligamentous relaxation (including lumbar), resulting in the lower lumbar spine instability, thus producing lumbar and leg pain symptoms. 4, lumbar degenerative changes when the human body into adulthood at the same time, the development of the gradual cessation, followed by degenerative changes also began. Degenerative changes in the lumbar spine can often lead to low back pain. Low back pain is a serious threat to the health and quality of life of the elderly. In the less severe cases, the mood is low and self-confidence decreases. Normal social activities are reduced. In severe cases, it can lead to paralysis and complete loss of labor ability, causing a serious burden to society and family. Elderly people have back and leg pain, must be relieved in time, clinical common cause of back and leg pain in the elderly what are the diseases? 1, lumbar intervertebral disc herniation It refers to the degenerative changes in the intervertebral disc, and under the action of external forces, so that the annulus fibrosus rupture, the nucleus pulposus protrudes, irritation or compression of the nerve root and cause lumbar pain with lower extremity radiating pain in the clinical syndrome. It is the most common clinical disease causing low back pain, but not all low back pain is disc herniation. And lumbar disc herniation and lumbar disc herniation are two concepts, the former is a diagnostic imaging term, the latter is a clinical diagnostic term; lumbar disc herniation does not necessarily produce symptoms, no symptoms is not a “disease”, and there is no need for treatment. Symptoms not caused by herniation, of course, can not be diagnosed as lumbar disc herniation. Doctors should pay attention to the “symptoms”, the treatment should also be symptoms, not just herniation. 2, lumbar degenerative diseases common degenerative diseases in the elderly, mainly lumbar hypertrophic spondylitis that hyperplastic spondylitis, lower lumbar spine instability, senile hunchback deformity. Lumbar degenerative changes caused by the lumbar vertebrae lumbago is mostly soreness, and accompanied by limited activity, inflexibility, a little activity after the pain is reduced, but the lumbar too much activity or weight-bearing pain gradually aggravated. Here we need to correctly recognize osteophytes: the formation of lumbar spine osteophytes is the body’s own protective response, compensatory response, its role is mainly through their own regulation to resist the change of clean stress, so that the lumbar spine to restore the balance of normal mechanics. With age, muscle support decreases, increasing the load of the lumbar spine, in order to adapt to the corresponding parts of the lumbar spine stress changes, lumbar spine to osteophytes of their own protective response to adapt to changes in lumbar spine biomechanics. This is a normal phenomenon, and many people do not experience symptoms, so osteophytes should not be used as the basis for disease diagnosis. However, if the osteophytes have irritated or compressed the nerves and blood vessels, and lumbar pain occurs, the disease can be formed. Lumbar spinal stenosis is a disease in which the lumbar spinal canal, the nerve root canal and the intervertebral foramen are deformed or narrowed, and cause the cauda equina to be compressed, resulting in corresponding clinical symptoms. Its typical symptom is intermittent claudication. There are primary, secondary and medical sources. 4.Osteoporosis Its primary symptom is often lumbago. It can be simply understood as bone atrophy. The systemic bone disease characterized by the decrease of bone volume and microstructure degeneration of bone tissue, the brittleness of bone increases, and fracture occurs easily. Low back pain in the elderly is not all caused by degenerative changes in the lumbar spine, certain conditions such as visceral diseases, spinal cord tumors, lumbar spine tuberculosis, etc. can also cause low back pain in the elderly. Especially metastatic bone tumors of the spine are now on the rise year by year. Therefore, when the elderly lumbar discomfort, the occurrence of lumbar and leg to be timely to find a specialist to diagnose and treat, carefully and carefully to identify, so as to avoid misdiagnosis, omission of diagnosis.