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| Parameter | Unit | Definition1 |
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| Distance Measurements | | |
| Trunk length VP-DM | mm | The distance from VP to the center point between DL and DR (DM) |
| Trunk length VP-SP | mm | The distance from VP to the automatically localized sacral point (SP) |
| Trunk length VP-SP | % | The distance of VP-SP expressed as a percentage of VP-DM |
| Dimple distance DL-DR | mm | The distance from DL to DR |
| Dimple distance DL-DR | % | The distance of DL to DR expressed as a percentage of VP-DM |
| Trunk and Pelvis Imbalances | | |
| Sagittal Imbalance VP-DM (trunk inclination) | ° | The angle between the line connecting VP-DM and an external plumb line |
| Sagittal imbalance VP-DM (trunk inclination) | mm | The distance between VP and the connecting external plumb line |
| Coronal imbalance VP-DM (trunk imbalance) | ° | The angle between the line connecting VP-DM and a plumb line through VP |
| Coronal imbalance VP-DM (trunk imbalance) | mm | The lateral distance between VP and DM |
| Pelvic obliquity (pelvic tilt) | ° | The angle between the line connecting DL and DR and the horizontal |
| Pelvic obliquity (pelvic tilt) | mm | The difference in height between DL and DR |
| Pelvic torsion DL-DR | ° | The torsion of the surface normals of DL and DR |
| Pelvic inclination (dimples) | ° | The mean vertical components of the surface normals at DL and DR |
| Pelvis rotation (rotation correction [pelvis]) | ° | In the frontal plane, the angle of rotation of DR in relation to DL |
| Location of Postural Reference Points | | |
| Inflection point ICT | mm | The point of maximum positive surface inclination above the kyphotic apex (KA) |
| Kyphotic apex KA | mm | The location of the posterior apex of the sagittal profile |
| Inflection point ITL | mm | The point of maximum negative surface inclination between the KA and the lordotic apex (LA) |
| Lordotic apex LA | mm | The location of the frontal apex of the sagittal profile in the lower region |
| Inflection point ILS | mm | The point of maximum positive surface inclination in the region between the LA and the sacrum |
| Flèche cervicale | mm | The horizontal distance between the cervical apex and the tangent through the KA |
| Flèche lombaire | mm | The horizontal distance between the LA and the tangent through the KA |
| Flèche cervicale (VP) | mm | The horizontal distance between the VP and the KA |
| Spinal Curve Angles | | |
| Kyphotic angle ICT-ITL (max) | ° | The angle between the surface tangents from the ICT and ITL |
| Kyphotic angle VP-ITL | ° | The angle between the surface tangents from VP and ITL |
| Kyphotic angle VP-T12 | ° | The angle between the surface tangents on VP and the location of the calculated 12th thoracic vertebra (T12) |
| Lordotic angle ITL-ILS (max) | ° | The angle between the surface tangents from ITL and ILS |
| Lordotic angle ITL-DM | ° | The angle between the surface tangents from ITL and DM |
| Lordotic angle T12-DM | ° | The angle between the surface tangents from T12 and DM |
| Pelvic inclination (symm.line) | ° | The angle of the vertical surface normals from the horizontal of DM |
| Spinal Deviation | | |
| Vertebral rotation (rms) (surface rotation) | ° | The root mean square (RMS) of the horizontal components of the surface normals on the symmetry line |
| Vertebral rotation (max) (surface rotation) | ° | The maximum value of the horizontal components of the surface normals on the symmetry line |
| Vertebral rotation (+max) (surface rotation) | ° | The maximum value of the horizontal components of the surface normals on the symmetry line to the right |
| Vertebral rotation (-max) (surface rotation) | ° | The maximum value of the horizontal components of the surface normals on the symmetry line to the left |
| Vertebral rotation (amplitude) (surface rotation) | ° | The maximal spinal torsion calculated from the maximal rotation to the right and to the left |
| Trunk torsion | ° | The maximal value of the horizontal components on VP compared to the horizontal components of the symmetry line on DM |
| Apical deviation VP-DM (rms) (lateral deviation) | mm | The RMS deviation of the midline of the spine from the direct connection VP-DM in the frontal plane |
| Apical deviation VP-DM (max) (lateral deviation) | mm | The maximum deviation of the midline of the spine from the direct connection VP-DM in the frontal plane |
| Apical deviation VP-DM (+max) (lateral deviation) | mm | The maximum deviation of the midline of the spine from the VP-DM line to the right |
| Apical deviation VP-DM (-max) (lateral deviation) | mm | The maximum deviation of the midline of the spine from the VP-DM line to the left |
| Apical deviation VP-DM (amplitude) (lateral deviation) | mm | The sum of the maximum deviation of the right and the left lateral deviation values |
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