What are common causes of back pain in children? The spine is able to bend and twist due to motion through the discs in the front of the spine and facets in the back of the spine. These stabilizing structures allow motion while maintaining the alignment and stability of the spine. At times, a stress fracture occurs separating the vertebra from its stabilizing facet. This is called “spondylolysis”. This may be associated with a slip in the bones where the upper vertebra moves in front of the lower vertebra. This is called “spondylolisthesis”.To learn more about spondylolysis, spondylolisthesis, and other causes of low back pain in children, please, click here.