Lower back pain causes
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Common Causes of Lower Back Pain
Lower back pain is extremely common, affecting up to 80% of adults at some point in their lives and representing a leading cause of disability worldwide Manchikanti2000Moisan2021Hartvigsen2018. The most frequent cause is non-specific musculoskeletal pain, which accounts for about 90-95% of cases. This type of pain is often related to issues with muscles, ligaments, intervertebral discs, facet joints, or the sacroiliac joint, and is usually not linked to a specific underlying disease Parfenov2020Allegri2016Hartvigsen2018.
Specific Pathological Causes: Disc Degeneration, Trauma, and Disease
A smaller proportion of lower back pain cases are due to specific pathologies. These include intervertebral disc degeneration, which leads to chronic pain as the discs lose their cushioning ability and structural integrity Bennett2022Suryadevara2024. Other specific causes include spinal tumors, vertebral fractures, infections, and inflammatory diseases such as seronegative spondyloarthropathies Kabeer2023Allegri2016Hartvigsen2018. Rarely, conditions like sarcoidosis can also present as lower back pain, especially when the spine is involved .
Nerve Compression and Radiculopathy
Compressive radiculopathy, such as that caused by a herniated disc or lumbar spinal stenosis, is another important cause. This occurs when nerve roots are compressed, leading to pain that may radiate down the leg (sciatica) Parfenov2020Allegri2016.
Occupational and Mechanical Factors
Physical activities that involve heavy lifting, twisting, or trauma are commonly reported as triggers for lower back pain. Many people attribute their pain to work-related activities, especially those involving repetitive or strenuous movements Biering-Sørensen2020Manchikanti2000.
Role of Paraspinal Muscles and End Plate Changes
Altered function or structure of the paraspinal muscles, such as fibrosis or fatty infiltration, is strongly associated with lower back pain. Changes in the vertebral end plates, known as Modic changes, are also linked to disc degeneration and persistent pain .
Psychosocial and Lifestyle Factors
Psychological factors like stress, depression, and anxiety can influence both the onset and persistence of lower back pain Parfenov2020Manchikanti2000Allegri2016+1 MORE. Other risk factors include smoking, obesity, and low socioeconomic status. People with physically demanding jobs or multiple health problems are at higher risk Manchikanti2000Hartvigsen2018.
Chronic and Recurrent Pain
While most episodes of lower back pain resolve within a few weeks, recurrence is common. Some individuals develop chronic pain, especially if they experience high initial pain intensity, psychological distress, or pain in multiple body sites Manchikanti2000Hartvigsen2018.
Conclusion
Lower back pain is a complex condition with many possible causes. Most cases are due to non-specific musculoskeletal issues, but specific diseases, nerve compression, occupational factors, muscle changes, and psychological factors can also play a role. Understanding these causes is essential for effective diagnosis and management Parfenov2020Kabeer2023Manchikanti2000+7 MORE.
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