What can cause low back pain?

Low back pain is the most common topic of daily life, with literature reporting that more than 65% of people have had low back pain troubles in their own lifetime. Some data suggest that low back pain is the second most common type of cause of worker rest due to illness, after upper respiratory infections. Despite its high incidence, low back pain does not receive much attention. The spine is the central axis of the body that provides support and protection. It has four curves, consisting of vertebrae and intervertebral discs, which are surrounded by and connected to muscles, tendons, and the spinal nerves that travel through them, and this structure serves to cushion shock, stabilize the body, and increase mobility during normal activities. However, as we age, the intervertebral discs in the spine gradually lose water, the elasticity of the intervertebral discs gradually decreases, and the height gradually decreases, so the ligaments and muscles between the vertebrae appear relatively long, and then the adjacent vertebrae will shift when the body is bent forward or backward, which is what doctors call vertebral instability. In this case, the surrounding muscles will be vigorously and continuously contracted in order to stabilize the spine, and slowly become fatigued, and muscle strain occurs. At the beginning, more rest can slowly relieve the problem, but over time the muscles become edematous and the area attached to the spine is stretched and bleeds, leading to slow calcification and the appearance of bone spurs commonly seen on X-rays. The body then tries hard to re-establish a stable spine, so the bone spurs grow larger and larger, finally connecting the adjacent vertebrae together. The spinal instability is repaired, but the excessive bone spurs cause compression of the surrounding structures, especially the nerves in the back. If it occurs in the lumbar spine this time shows an inability to walk long distances, numbness and weakness in the lower extremities, etc.; if it occurs in the neck there is numbness in the hands, poor dexterity, etc., and walking is like stepping on cotton. This gives rise to clinically common lumbar spondylosis and cervical spondylosis. In other cases, trauma or car accidents cause the fibers of the intervertebral disc to break down, and the nucleus pulposus protrudes and presses on the nerve roots at the back, resulting in sciatica as it is known to the people. Usually the pain will follow the path of the nerve and “run” to the innervated lower extremity, often described clinically as radiating pain, accompanied by numbness of the skin in the corresponding area. There are also some low back pains caused by other diseases, such as ankylosing spondylitis: this pain is characterized by morning rise after rest and stiffness of the lumbar spine, often occurring in adolescent males; vertebral tumors: mostly seen in the elderly, with a previous history of tumors, this pain is mainly persistent, with significant pain at night when resting; spinal tuberculosis: usually seen in the lumbar spine, usually with mild pain, relieved after rest and aggravated after exertion. It is often associated with low fever, fatigue, lethargy, night sweats, and in some cases, pain at the root of the thigh. In modern society, life is fast-paced and work is stressful, so many people are sedentary or ambulatory for long periods of time, and there are also people with low heads who always look at their cell phones, and over time, the spine ages before it ages. The clinic often sees post-80s and even post-90s because of neck pain or low back pain to see a doctor, a checkup found that the physiological curvature of the spine has disappeared. So be sure to pay attention in your daily life, pay attention to healthy habits and reasonable physical exercise to keep your spine young forever.