Table 3 Comparison between the cases with poor clinical outcomes and the cases with good outcomes
From: Retrospective analysis of surgical outcomes for atlantoaxial subluxation
C1 laminectomy | C1/2 fixation | |||
|---|---|---|---|---|
Clinical outcome | Poor | Good | Poor | Good |
Case, no. | 6 | 5 | 7 | 12 |
RA, no. | 1 (16.7%) | 0 (0%) | 3 (42.9%) | 3 (25.0%) |
OA, no. | 4 (66.7%) | 4 (80.0%) | 4 (57.1%) | 8 (66.7%) |
Trauma, no. | 1 (16.7%) | 1 (20.0%) | 0 (0%) | 1 (8.3%) |
Age, average, years | 74.2 ± 7.9 | 74.8 ± 6.2 | 69.1 ± 10.5 | 67.3 ± 8.3 |
Sex, female/male, no. | 1/5 | 1/4 | 3/4 | 6/6 |
Operative time, average, min | 121.3 ± 62.7 | 126.2 ± 51.0 | 159.6 ± 47.4 | 202.4 ± 62.3 |
Blood loss, average, mL | 61.0 ± 89.0 | 43.8 ± 43.1 | 149.4 ± 244.0 | 205.3 ± 441.1 |
Ranawat value, average, mm | ||||
Preoperative | 13.7 ± 3.0 | 13.8 ± 3.7 | 14.6 ± 4.6 | 14.0 ± 2.3 |
Postoperative | 12.9 ± 3.2 | 13.3 ± 2.9 | 14.2 ± 3.2 | 13.7 ± 2.3 |
CAA, average, degrees | ||||
Preoperative | 157.2 ± 7.9 | 150.8 ± 5.8 | 154.3 ± 7.5 | 154.3 ± 8.2 |
Postoperative | 155.3 ± 6.2 | 155.2 ± 6.2 | 155.3 ± 5.9 | 158.1 ± 7.2 |
C1/2 angle, average, degrees | ||||
Preoperative | 21.7 ± 6.4 | 27.0 ± 14.8 | 21.0 ± 3.4 | 15.5 ± 10.6 |
Postoperative | 23.0 ± 8.6 | 28.3 ± 12.7 | 21.0 ± 9.4 | 19.7 ± 8.1 |
ADI flex/ext., average, mm | ||||
Preoperative | 7.8 ± 2.8/5.3 ± 2.9 | 6.5 ± 1.9/4.5 ± 1.9 | 7.7 ± 2.2/3.4 ± 1.7 | 9.1 ± 3.1/4.3 ± 2.7 |
Postoperative | 8.3 ± 2.6/5.7 ± 3.1 | 8.0 ± 3.5/5.0 ± 2.9 | 3.9 ± 1.8/3.9 ± 1.3 | 3.9 ± 2.5/3.9 ± 2.5 |
ADI neutral, average, mm | ||||
Preoperative | 6.4 ± 3.1 | 6.1 ± 1.9 | 5.9 ± 1.3 | 8.6 ± 3.2† |
Postoperative | 6.3 ± 3.2 | 5.8 ± 3.6 | 3.9 ± 1.3* | 3.8 ± 2.5* |
ΔADI | 0.2 ± 1.0 | 0.3 ± 1.9 | 2.0 ± 1.3 | 4.7 ± 3.5† |
C2–7 angles, average, degrees | ||||
Preoperative | 12.2 ± 17.7 | 8.6 ± 4.5 | 4.9 ± 12.5 | 11.6 ± 15.1 |
Postoperative | 5.8 ± 17.7 | − 0.8 ± 7.8* | 4.9 ± 8.7 | 3.1 ± 15.8 |
Cervical SVA, average, mm | ||||
Preoperative | 37.8 ± 15.8 | 43.5 ± 13.2 | 14.9 ± 12.6 | 10.6 ± 15.9 |
Postoperative | 43.8 ± 21.5 | 40.0 ± 22.9 | 18.6 ± 18.2 | 16.8 ± 14.3 |
C-JOA score, average, points | ||||
Preoperative | 6.9 ± 3.5 | 10.5 ± 4.1 | 9.7 ± 3.6 | 9.9 ± 4.1 |
Postoperative | 8.5 ± 3.2 | 14.3 ± 2.8† | 10.6 ± 3.2 | 14.5 ± 2.0*♰ |
Recovery rate of C-JOA score, average, % | 16.1 ± 6.8 | 67.4 ± 21.8† | 11.7 ± 28.3 | 72.0 ± 21.7† |
Complications, no. | AAF = 1 (16.7%) | Hematoma = 1 (20.0%) | Septic emboli = 1 SSI = 1 VS = 1 (42.9%) | SSI = 1 DSI = 1 AAF = 2 (33.3%) |
Revision, no. | 1 (16.7%) | 1 (20.0%) | 2 (28.6%) | 3 (25.0%) |