Table 3.
Operative details of patients undergoing minimally invasive spine surgery compared with traditional open approach surgery.
| Open (n = 155) | MISS (n = 100) | p-value | |
|---|---|---|---|
| Length of Surgery (mins), mean ± SD | 157.5 ± 77.1 | 109.0 ± 63.3 | <0.001* |
| Estimated blood loss (mL), mean ± SD | 602.0 ± 489.4 | 136.5 ± 141.2 | <0.001* |
| Instrumented Levels, mean ± SD | 5.0 ± 1.8 | 4.1 ± 1.5 | <0.001* |
| Number of Constructs per patient, n (%) | |||
| One | 154 (98.1) | 98 (98.0) | 1.00 |
| Two | 3 (1.9) | 1 (1.0) | |
| Instrumentation Segment Lengtha, n (%) | |||
| Short | 64 (40.0) | 64 (64.0) | <0.001* |
| Medium | 43 (26.9) | 12 (12.0) | 0.005* |
| Long | 53 (33.1) | 24 (24.0) | 0.13 |
| Fusion, n (%) | 152 (96.8) | 32 (32.0) | <0.001* |
| Allograft | 25 (15.9) | 30 (30.0) | 0.008* |
| Autograft | 36 (22.9) | 1 (1.0) | <0.001* |
| Allograft and Autograft | 90 (57.3) | 2 (2.0) | <0.001* |
| BMP | 5 (3.2) | 18 (18.0) | <0.001* |
The values are given as the mean and standard deviation (SD) or as the number with the percentage in parentheses. MISS indicates minimally invasive spine surgery, GCS, Glasgow Coma Scale; ISS, Injury Severity Score. *Statistical significance was determined with a p-value less than 0.05.
a
Short-segment includes construct instrumented one level above and below the injury level. Medium-segment includes constructs instrumented one level above or below, as well as two segments above or below the injury. Long-segment includes constructs instrumented at least two levels above and below the injury.