Table 4.
Comparison of baseline, operative, and follow-up parameters between patients with the best and worst outcomes, based on the Oswestry Disability Index, following surgery for scoliosis among adults 18–45 years old
| Worst (n = 15) | Best (n = 19) | p value | |
|---|---|---|---|
| Baseline parameters | |||
| Gender (M/F) | 1/14 | 2/17 | 1.000 |
| Mean age, years (SD) | 37 (5) | 29 (10) | 0.002 |
| Mean body mass index (SD) | 27 (5) | 22 (3) | 0.001 |
| Smoker (%) | 33 % | 0 % | 0.011 |
| Depression/anxiety (%) | 33 % | 11 % | 0.199 |
| Narcotic use (%) | 33 % | 5 % | 0.066 |
| Mean comorbidity index (SD) | 1.4 (2.1) | 0.3 (0.7) | 0.306 |
| Mean leg pain score (SD) | 3.2 (3.7) | 0.0 (0.0) | 0.010 |
| Mean back pain score (SD) | 7.2 (1.9) | 5.3 (2.8) | 0.044 |
| Diagnosis (de novo/AIS) | 0/15 | 0/19 | – |
| Curve type (thoracic/thoracolumbar) | 8/7 | 11/8 | 1.000 |
| Positive sagittal malalignment, percent with SVA >+6 cm | 7 % | 0 % | 0.452 |
| Coronal malalignment, percent with CA magnitude >4 cm | 8 % | 6 % | 1.000 |
| Mean max coronal Cobb angle, ° (SD) | 62 (10) | 59 (14) | 0.429 |
| Operative parameters | |||
| Operative time, h (SD) | 7.3 (2.5) | 6.6 (2.6) | 0.490 |
| Estimated blood loss, L (SD) | 0.9 (0.5) | 1.1 (0.7) | 0.558 |
| Fusion to the sacro-pelvis (%) | 27 % | 5 % | 0.146 |
| Major complication (%) | 7 % | 5 % | 1.000 |
| Minor or major complication (%) | 20 % | 21 % | 1.000 |
| 2-year follow-up parameters | |||
| Mean leg pain score (SD) | 2.9 (4.1) | 0.3 (0.6) | 0.060 |
| Mean back pain score (SD) | 6.5 (1.9) | 0.6 (0.7) | <0.001 |
| Narcotic use (%) | 10 % | 0 % | 0.357 |
| Positive sagittal malalignment, percent with SVA >+6 cm | 13 % | 0 % | 0.187 |
| Coronal malalignment, percent with CA magnitude > 4 cm | 7 % | 6 % | 1.000 |
| Mean max coronal Cobb angle, ° (SD) | 30 (9) | 22 (9) | 0.038 |
SD standard deviation, AIS adult idiopathic scoliosis, SVA sagittal vertical axis, CA coronal alignment
Significant p values are shown in bold