Table 2.
Details of instrumentation level, type, grading, and side of pedicle screw breach.
| No. | T3 | T4 | T5 | T6 | T7 | T8 | T9 | T10 | T11 | T12 | L1 | L2 | L3 | L4 | L5 | S1 | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | MAc | MAc | LAv | LAv | 2MA, 2LA | ||||||||||||
| 2 | IAvLAc | MAcIAv | IBv | IAv | MAv | 2MA, 1LA, 3IA, 1IB | |||||||||||
| 3 | |||||||||||||||||
| 4 | |||||||||||||||||
| 5 | IAv | 1IA | |||||||||||||||
| 6 | |||||||||||||||||
| 7 | MBv | 1MB | |||||||||||||||
| 8 | MAv | MAc | 2MA | ||||||||||||||
| 9 | |||||||||||||||||
| 10 | MAc | MBvLAc | MBc | MAv | LAv | LCc | MAc | 3MA, 2MB, 2LA, 1LC |
Breach type: M: medial breach; L: lateral breach; I: inferior breach. Breach grading: A: <2 mm breach; B: ≥2 mm breach and <4 mm breach; C: ≥4 mm breach.cConcave side.vConvex side. Grey background: range of instrumentation.