2020 Volume 11 Issue 9 Pages 1083-1089
Introduction: There is no unified view about the indication of local corrective fusion surgeries for osteoporotic posttraumatic kyphosis in thoracolumbar junction.
Methods: The relationship between preoperative values of each X-ray parameter and postoperative PI-UIV.LL (the angle between the upper instrumented vertebra and the sacrum) at the final observation were examined for only the cases in whom the lowest instrumented vertebra was above L4.
Results: Preoperative PI-UIV.LL and PT correlated with the final PI-UIV.LL. The cutoff values of the postoperative PI-UIV.LL were ≤10, as calculated by the ROC curve, and those of the preoperative PI-UIV.LL and PT were ≤33 and ≤29, respectively.
Conclusions: Postoperative sagittal balance could be predicted by the value of preoperative PT and PI-UIV.LL. Local corrective fusion surgeries should not be applied if these values exceed above the thresholds.
