Functional Restoration for Chronic Low Back Pain: Medico-economic Impact

Inclusion Criteria: * Low back pain for at least 3 months * Low back pain with an intensity greater than or equal to 40/100 on a visual analog scale * Low back pain with a mechanical pattern (reduced by rest) * Low back pain on mobilization or palpation of the lumbar spine * Standard X-ray or MRI of the lumbar spine taken at the same time as the low back pain, showing normal or degenerative (arthritic) changes in the lumbar spine * Patient on sick leave due to low back pain for at least 3 months and less than 2 years * Patient who speaks and writes French * Patient with social security coverage Exclusion Criteria: * Low back pain of inflammatory, infectious, tumorous, or fracture origin * Radiculalgia in a lower limb greater than 40/100 * Radiculalgia in a lower limb with neurological complications (motor function less than or equal to 3/5 or cauda equina syndrome) * Cortisone injection into the lumbar spine in the previous month * Lumbar spine surgery in the previous 6 months * Heart or respiratory failure * Psychiatric condition preventing assessment of low back pain * Pregnancy * Refusal to participate in the study * Individuals benefiting from judicial protection measures