Evaluation of Therapeutic Management in Chronic Low Back Pain Patients

Seventy-eight percent of the population declares being concerned by pain, directly or indirectly. Chronic pain, defined as pain that has lasted for more than three months, affects more than one third of the French population. The national survey of the French Society for the Study and Treatment of Pain (SFETD), conducted in 2009, reveals that the most widespread chronic pain is low back pain (20%). Pain not only affects the body, but also destroys the person who endures it. A comparative study by Attal et al. carried out on a sample of 1,591 chronic pain sufferers and 1,237 non pain sufferers shows a major impact of pain on the individual's quality of life (SF12), sleep (MOS sleep) and anxiety and depression (HADS). The 2009 report of the French National Authority for Health (HAS) shows that chronic pain generates a significant societal cost. Low back pain is the leading cause of activity limitation in people aged 45 to 65, and the third leading cause of chronic disability. It is the leading cause of disability in people under 45 years of age, and the leading cause of work stoppage and occupational disease. The reference tool for assessing pain is currently the Visual Analogue Scale (VAS). However, several factors considerably limit the relevance of an exclusive use of this tool: * For the patient: the intensity of pain is objectively influenced by many parameters such as the time of day, stress, position, duration of evolution, mechanical or "neuropathic" character, paroxysms, etc. These are all elements that objectively disrupt the evaluation performed by the VAS. When the subjective and emotional dimension is included in these elements, the cloudiness of "true" perception of such a sensation increases even more. * Difficulties of evaluation for the carer: carers are therefore confronted with a lack of relevance of objective pain evaluation tools, and researchers have to deal with data that are often not very reproducible. A fortiori, the second problem arisin