Table 4 Description of rasterstereography parameters.
Sagittal plane | |
Trunk length (mm) | The distance between VP and DM |
Trunk inclination (mm) | The distance between two vertical lines passing for VP and DM |
Trunk inclination (°) | The angle between the plumb line passing for VP and a vertical line connecting VP-DM |
Cervical depth | The horizontal distance between the cervical apex and a tangent passing for KA |
Cervical arrow | The horizontal distance between the cervical apex and a perpendicular line passing for KA |
Lumbar depth | The horizontal distance between the lumbar apex and a tangent passing for KA |
Lumbar arrow | The horizontal distance between the lumbar apex and a perpendicular line passing for KA |
Kyphosis angle | The angle formed between the two surface tangent lines of the ICT and ITL |
Lumbar lordosis angle | The angle formed between the two surface tangent lines of the ITL and ILS |
Coronal plane | |
Trunk imbalance (mm) | The lateral distance between two lines passing for VP and DM |
Trunk imbalance (°) | The angle between the plumb line passing for VP and a vertical line connecting VP-DM |
Shoulders obliquity (mm) | The distance between two horizontal lines passing for SR and SL |
Shoulders obliquity (°) | The angle between a horizontal line passing for SR and SL and a horizontal line perpendicular to the gravity line |
Pelvic obliquity (mm) | The distance between two horizontal lines passing for DR and DL |
Pelvic obliquity (°) | The angle between a horizontal line passing for DR and DL and a horizontal line perpendicular to the gravity line |
Vertebral deviation RMS | The RMS deviation of the midline of the spine from the direct connection VP-DM line |
Vertebral deviation min | The maximum deviation to the left of the midline of the spine from the VP-DM line |
Vertebral deviation max | The maximum deviation to the right of the midline of the spine from the VP-DM line |
Surface rotation RMS | The RMS rotation in the axial plane of a spinous process when compared to the neutral pelvis |
Surface rotation min | The maximum rotation to the left in the axial plane of a spinous process when compared to the neutral pelvis |
Surface rotation max | The maximum rotation to the right in the axial plane of a spinous process when compared to the neutral pelvis |
Transversal plane | |
Shoulder torsion | The rotation in the transversal plane of the SR relative to a reference coronal plane perpendicular to the camera-projection axis |
Pelvic torsion | The rotation in the transversal plane of the DR relative to a reference coronal plane perpendicular to the camera-projection axis |
