Degenerative spondylitis, also known as spinal osteoarthritis, hypertrophic spondylitis, proliferative spondylitis, or senile spondylitis. It is a chronic disease of the spine induced by degenerative changes in the intervertebral discs. The joints with high load and high activity are most often involved. Clinically, the lumbar spine is more common, the cervical spine is second, and the lower thoracic spine can also occur. Etiology: It is generally believed that degenerative changes in aging tissues, chronic accumulation of injuries (strain), wind and cold external invasion or prolonged exposure to wetlands are important factors leading to this disease. From the physiological point of view, when people reach middle age, especially in old age, all tissues and organs have different degrees of degenerative changes, and joint tissues are no exception, and vertebrae also undergo tissue degeneration and form bone redundancy. In workers who have been active in the back for many years, degenerative spondylitis occurs earlier and the symptoms are more severe from. The pathological changes begin with degeneration of the articular cartilage. As a result of degeneration, the articular cartilage loses its lubricious and shiny appearance, becomes rough and inflexible yellow cartilage, and then gradually softens and breaks up, and cartilage loss may occur. The exposed bone surface, after a long period of wear and tear, the bone surface hardens, and new bone proliferation occurs at the edge of the cartilage and the attachment of the joint capsule and ligaments, forming a bone superfluous, which is mostly lip-shaped, so it can also be called bone spur or bone lip (lip convexity), or even the bone superfluous at the edge of adjacent vertebrae are connected together to form a bone bridge, resulting in stiffness or loss of movement of the spine. Clinical manifestations and diagnosis: The disease is mostly found in manual workers over the age of forty, more in men than in women. Early symptoms of low back pain, stiffness of the spine during activity, aggravation of symptoms during labor, and transformation after rest (aggravation at night). Stiffness and pain in the lumbar region in the morning, which is relieved by a short period of light activity and aggravated by excessive activity or overwork. The lumbar region likes warmth and fears cold, and low back pain can occur when sitting or standing for a long time. The duration of spondylitis may be a few months or several years to a dozen years. The spinal movement may be restricted or stiff on examination, but there is usually no significant muscle atrophy or muscle tension, the lumbar pain points are not concentrated, there may be abnormal changes in spinal posture, the straight leg raise test may be close to normal, and there are no changes in tendon reflexes. X-ray examination shows osteophytes at the edges of several vertebral bodies, narrowing of the vertebral space, and sclerosis of the upper and lower edges of the vertebral body. However, the vertebral body contour and small joint gap boundary are clear, and the physiological curve of the spine is abnormal or not significantly changed. The main points of diagnosis are as follows: 1, the age of onset is mostly above forty years old, and there is often a history of chronic cumulative injury. 2, lumbar stiffness and pain, lower limb tension feeling easy fatigue, or accompanied by atypical sciatica. 3, X-ray film, showing multiple vertebral body edge osteophytes, sclerosis (mostly spine-like or lip-like projections), sharp joint protrusions, or calcification of fascial tissue, and varying degrees of narrowing of the vertebral space.