Common Causes of back pain
Prolapsed intervertebral disc: Condition when disc between two vertebras that gives shock absorbing effects while spinal loading get prolapsed causing irritation to nerve.
Lumbar Spondylolosis: Degenerative condition of spine like arthritis causing mechanical pain and stiffness.
Ligament strain: Condition when ligament that connects vertebras get strained and causing pain.
Muscular Imbalance: This occurs when muscles of back are weak and a synchronized strength can also cause pain in back.
Many other conditions like muscle spasm, facet joint problems, postural abnormalities can cause back pain.
Ninety percent of low back pain is mechanical. This type of low back pain is the result of overuse or straining, spraining, lifting, or bending that results in ligament sprains, muscle pulls, or disc herniations. Mechanical low back pain is the most common cause of work-related disability in persons under 45 years old. While disc problems have gotten much of the credit for low back pain, ligament injury is a more importa source of back pain. In fact, it has been reported that only 4 percent of low back pain is due to a herniated disc.
Mechanical back pain is caused by wear and tear in the parts of the lumbar spine. This type of pain is similar in nature to a machine that begins to wear out. Mechanical pain usually starts from degenerative changes in the disc. As the disc begins to collapse and the space between the vertebrae narrows, the facet joints may become inflamed. Mechanical pain typically gets worse after activity due to strain on the moving parts of the spine. Mechanical pain is usually felt in the back, but it may spread into the buttocks, hips, and thighs. The pain rarely goes down past the knee. Mechanical back pain usually doesn't cause weakness or numbness in the leg or foot, because the problem is not from pressure on the spinal nerves