TABLE 3.
Complications for 49 Patients With Adult Spinal Deformity Treated With Pedicle Subtraction Osteotomy Stratified by Whether 2 or 4 Rods Were Used Across the Osteotomy
| Number of patients with specified complication (%) | |||
|---|---|---|---|
| Complication | Group 1 (4 rods, n = 29) | Group 2 (2 rods, n = 20) | P-valuea |
| Any complication | 14 (48.3) | 14 (70.0) | .15 |
| Major complications | 9 (31) | 8 (40) | .56 |
| Pseudarthrosis | 1 (3.4) | 5 (25) | .035 |
| Rod breakage | 0 (0.0) | 5 (25) | .008 |
| Junctional breakdown | 1 (3.4) | 1 (5.0) | .99 |
| Wound infection | 5 (17.2) | 0 (0.0) | .07 |
| Pneumonia | 2 (6.9) | 0 (0.0) | .51 |
| Renal failure | 0 (0.0) | 1 (5.0) | .41 |
| Myocardial infarction | 0 (0.0) | 1 (5.0) | .41 |
| Respiratory distress | 2 (6.9) | 0 (0.0) | .51 |
| Neurological deficit | 2 (6.9) | 0 (0.0) | .51 |
| Vein injury | 0 (0.0) | 1 (5.0) | .41 |
| Minor complications | 9 (31) | 11 (55) | .14 |
| Confusion | 1 (3.4) | 1 (5.0) | .99 |
| Ileus | 1 (3.4) | 1 (5.0) | .99 |
| Diarrhea | 1 (3.4) | 0 (0.0) | .99 |
| Dural tear | 5 (17.2) | 8 (40.0) | .10 |
| Prominent instrumentation | 0 (0.0) | 1 (5.0) | .41 |
| Wound dehiscence | 0 (0.0) | 1 (5.0) | .41 |
| Deep venous thrombosis | 1 (3.4) | 0 (0.0) | .99 |
aSignificant P values are shown in bold print.