Three-Dimensional ROM, Lateral Bending
| 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.