The kinematical analysis of displacements of the vertebrae of an in vivo lumbar column during a movement of lateral inflexion allows one:​

• to quantify the behavioural qualities of the spine,
• to obtain information about the way in which a vertebral column adapts to stresses
• to define the concept of standard column,
• to analyse the wear and tear produced by lateral impact on spinal columns and hence define the concept of standard column.