Neurology Medicine

As has been demonstrated that back pain is not always due to an organic disorder of the spine, have begun to study the factors associated with an increased risk of autism. We must be cautious in interpreting these studies show that back pain sufferers have some characteristics more often than non-sufferers. That means that these factors are associated with an increased risk, not necessarily to be the only cause of pain or that their removal improve it.

Despite this limitation, in those cases where you have to take into account factors rigorous epidemiological studies show that are associated with an increased risk of back pain, especially in cases in which the mechanism can be glimpsed explain their potential influence. Some of the factors that have been most studied are:

- Flexo-repetitive extension of the spine, is associated with increased risk of back pain.

On flexing the spine causes increased pressure within the intervertebral disc. If at that time weight bearing and re-straighten the spine, the pressure in the back of the disc which can increase both cracked or broke, causing a herniated disc. This process can occur once, if the effort is intense, but usually occurs by a mechanism of accumulation: each improper bending increases the impact of the nucleus in the fibrous disk and erodes until crack or break.

In addition to the disk, also the muscle is overloaded to keep leaning forward. That position is possible thanks essentially to maintain controlled tension of the paravertebral muscles, gluteal and hamstring, which prevents the body from falling forward. The larger the bending angle, the greater the effort required to perform the lumbar musculature and the lower the number of segments that do, making it easier to overload.

Mechanistic studies show that disc and muscle overload is greater if the inclination is done with straight legs, and lower when flexed knees and keeping your back straight.

In fact, epidemiological studies have shown that back pain is more frequent among those who perform repetitive motions of flexion and extension of the spine, especially if they are driving charge, if it is excessive or if your muscles are inadequate.

- Torque or frequent rotation of the spine is associated with increased risk of back pain. From the shape of the vertebrae, the cervical spine can rotate more than the back, and this more than the back. Probably exaggerated repetition of rotations in the lumbar spine can overload the facet joint and muscles, and even also the disk, especially if it is bearing weight.

In fact, epidemiological studies have shown that back pain is more frequent among those who perform repetitive motions of twisting or rotation of the spine, especially if they are driving charge, if it is excessive or if your muscles are inadequate.

Source: www.espalda.org/divulgativa/dolor/causas/factores.asp
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