Article Figures & Data
Figures
- Figure 1
AP and lateral standing views of the lumbar spine demonstrating the position of the tantalum beads and the ProDisc-L total disc replacement.
- Figure 2
Biplanar radiographic examination of a subject with a single-level disc replacement demonstrating the position of the tantalum beads. The amount of radiation exposure was substantially less with these films when compared to routine lumbar films.
- Figure 3
RSA examination was performed in a specialized radiographic suite with double roentgen tubes directed in 40° diverging lines.
- Figure 4
Mean ODI and VAS clinical scores at each of the follow-up time points. There was a significant decrease (P < .001) seen in both VAS and ODI following the procedure.
- Figure 5
Mean lumbar sagittal ROM following total disc replacement demonstrates a gradual increase over the 1-year follow-up period.
- Figure 6
Mean lumbar coronal ROM following total disc replacement demonstrates similar magnitude during the 1-year follow-up period.
Tables
Gender N Age (yrs) Height (cm) Weight (kg) Female 5 43 ± 9 163 ± 11 67 ± 13 Male 7 44 ± 7 178 ± 5 82 ± 13 Total 12 43 ± 8 172 ± 11 76 ± 15 Follow-up (Months) Rx Flex/Ext Rotations (°) Ry Axial Rz Lat Bend Tx Lateral Translation (mm) Ty Vertical Tz AP 1.5 2.5 -0.1 0.1 -0.2 -0.1 0.3 3 5.6 -0.6 0.5 -0.2 -0.4 1.5 6 6.6 0.2 -0.2 -0.1 -0.9 2.6 12 6.3 -0.4 0.2 -0.1 -1.2 2.4 The 3-dimensional ROM results of patients following ProDisc-L total disc replacement while moving from extension to fl exion measured using RSA technique. Rotational motion in the x-axis (Rx) corresponds to the primary motion for the plane of interest (sagittal plane); other rotations (Ry and Rz) are coupled motions.
Follow-up (Months) Rx Flex/Ext Rotations (°) Ry Axial Rz Lat Bend Tx Lateral Translation (mm) Ty Vertical Tz AP 1.5 -1.2 -1.1 2.9 -1.5 0.4 -0.2 3 -0.3 -0.4 2.9 -1.4 0.1 0.1 6 -1.5 -0.1 3.2 -1.5 0.2 -0.2 12 0.6 -0.5 2.7 -0.8 -0.1 0.1 The 3-dimensional ROM results of patients following ProDisc-L total disc replacement while moving from left to right lateral bending measured using RSA technique. Rotational motion in the Z-axis (Rz) corresponds to the primary motion for the plane of interest (coronal plane); other rotations (Rx and Ry) are coupled motions.
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