Table 1.
Description of anatomical parameters measured
| Parameter | Measurement | Description |
|---|---|---|
| aVBH | Anterior Vertebral Body Height | Distance cephalad to caudad endplate at mid-sagittal line |
| mVBD | Midbody Vertebral Body Depth | Antero-posterior vertebral body depth at mid-sagittal line |
| mVBW | Midbody Vertebral Body Width | Transverse distance from left to right border of vertebral body at mid-vertebral line |
| lOPW rOPW |
Left Outer Pedicle Width Right Outer Pedicle Width |
Distance medial border of transverse foramen to medial border of pedicle |
| lOPH rOPH |
Left Outer Pedicle Height Right Outer Pedicle Height |
Distance upper to lower pedicle surface in sagittal plane |
| ltPA rtPA |
Left transverse Pedicle Angle Right transverse Pedicle Angle |
Angle formed between transverse pedicle axis and mid-sagittal line |
| lsPA rsPA |
Left sagittal Pedicle Angle Right sagittal Pedicle Angle |
Angle formed between plane of anterior vertebral body wall at mid-sagittal line and sagittal pedicle axis |
| lPAL rPAL |
Left Pedicle Axis length Right Pedicle Axis length |
Distance anterior vertebral body wall to posterior marging of lateral mass along the transverse pedicle axis |
| ltIP rtIP |
Left transverse Intersection Point Right transverse Intersection Point |
Transverse intersection point of transverse pedicle axis with anterior vertebral body wall |
| DltIP DrtIP |
Distance left transverse Intersection Point Distance right transverse Intersection Point |
Distance between transverse intersection point and mid-sagittal line at the anterior vertebral body wall at each cervical level C3-T1 |
| lsIP rsIP |
Left sagittal Intersection Point Right sagittal Intersection Point |
Sagittal intersection point of sagittal pedicle axis with anterior vertebral body wall |
| DlsIP DrsIP |
Distance left sagittal Intersection Point Distance right sagittal Intersection Point |
Distance between sagittal intersection point and cephalad endplate at each cervical level C3-T1 |
| DlsIPCx+Cx+1 DrsIP Cx+Cx+1 |
Interlevel Distance left sagittal Intersection
Points: Cx+Cx+1 Interlevel Distance right sagittal Intersection Points: Cx+Cx+1 |
Interlevel distance between sagittal intersection points, e.g. distance between lsIP of C3 and lsIP of C4, or C6 and C7 |