Normally, each person has a fairly well pronounced lumbar lordosis. Represented by a bend in the opposite direction in the lumbar region. It acts as a shock absorber and protects the spinal cord from mechanical damage.
Any scoliosis is a spinal deformity, and S-shaped scoliosis is determined when, along with a frontal curvature resembling the letter C, there is a second lateral curvature — compensating, giving the spinal column the shape of the letter S.
According to the Scoliosis Research Society, juvenile scoliosis accounts for 12–25% of cases; girls are diagnosed more often than boys.
The spine takes on a pathological position most often in childhood or adolescence during the period of active development of cartilage and bone tissue, although such a defect can also occur in adults. The term scoliosis itself suggests that the curvature plane is frontal, in contrast to lordosis and kyphosis - bends in the sagittal plane.
In foreign literature, this disease is referred to as lumbar degenerative kyphosis (LDK), which is a subgroup of flat back syndrome.
According to statistics, lumbar scoliosis is most often found in school-age children and mainly in girls (more than 85% of all cases).
There are many types of such curvatures - for example, if the spine bends to the left, then they talk about such a pathology as left-sided scoliosis.
Complex, but moderate (within 11-25 °) curvature of the spinal column along the frontal and sagittal planes, which is accompanied by twisting of the vertebrae, is called scoliosis.
Curvature of the lumbar spine - lumbar scoliosis - is often formed in the form of a compensatory reaction in the primary deformity of the thoracic spine, or is formed primarily.