Table 1 Results of screw placement in various lumbar spine segments
Lumbar vertebral body | Screw placement results | Grade 0 (%) | |||
|---|---|---|---|---|---|
Grade 0 | Grade 1 | Grade 2 | Grade 3 | ||
L1 | 17 | 4 | 3 | 0 | 70.8% |
L2 | 19 | 4 | 1 | 0 | 79.2% |
L3 | 20 | 4 | 0 | 0 | 83.3% |
L4 | 22 | 1 | 1 | 0 | 91.7% |
L5 | 21 | 2 | 1 | 0 | 87.5% |
Total | 99 | 15 | 6 | 0 | 82.5% |