Table 4.
Comparisons of TLKA and SVA at each follow-up by SI and SB groups
| T0 | T1 | T2 | T3 | p-value | |||||
|---|---|---|---|---|---|---|---|---|---|
|
|
|
|
|
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| SI | SB | SI | SB | SI | SB | SI | SB | ||
| TLKA (°) | 32.8±10.8 | 21.7±14.2 | 33.7±10.6 | 23.2±14.7 | 37.6±10.1 | 24.4±14.8 | 43.1±8.5 | 25.6±14.5 | 0.000* |
|
| |||||||||
| SVA (mm) | 9.3±8.5 | 1.8±1.3 | 9.4±4.1 | 1.9±1.3 | 10.0±4.3 | 2.0±1.3 | 10.6±4.4 | 2.0±1.4 | 0.000* |
Values are presented as mean±standard deviation. Patients of SI group, who underwent corrective surgery and fusion with instrumentation, were excluded in this comparison.
TKLA, thoracolumbar kyphosis angle; SVA, sagittal vertical axis; T0, before vertebroplasty, T1, immediately after vertebroplasty; T2, 1 year after vertebroplasty; T3, 2 years after vertebroplasty; SI, sagittal imbalance; SB, sagittal balance.
*
p<0.05 (using a repeated measure analysis of variance).