Table 3 Instrumented levels and risks for intra-pedicular accuracy
Level | A | B | A + B | C | D | E | Intact (%) | Breached (%) | Raw OR (95%Cl) | p |
|---|---|---|---|---|---|---|---|---|---|---|
T11 | 12 | 1 | 13 | 1 | 0 | 2 | 12 (3.6) | 4 (1.2) | 2.166 (0.653–6.862) | 0.364 |
T12 | 33 | 5 | 38 | 2 | 2 | 2 | 33 (9.9) | 11 (3.3) | 2.333 (1.084–5.022) | 0.270 |
L1 | 42 | 3 | 45 | 6 | 2 | 1 | 42 (12.7) | 12 (3.6) | 1.984 (0.953–4.128) | 0.063 |
L2 | 34 | 7 | 41 | 0 | 2 | 1 | 34 (10.2) | 10 (3.0) | 1.995 (0.910–4.374) | 0.080 |
L3 | 17 | 3 | 20 | 0 | 0 | 0 | 17 (5.1) | 3 (0.9) | 1.075 (0.302–3.820) | 0.911 |
L4 | 56 | 4 | 60 | 0 | 0 | 0 | 56 (16.9) | 4 (1.2) | 0.380 (0.131–1.104) | 0.066 |
L5 | 67 | 2 | 69 | 1 | 0 | 0 | 67 (20.2) | 3 (0.9) | 0.222 (0.067–0.737) | 0.013 |
S1 | 24 | 0 | 24 | 0 | 0 | 0 | 24 (7.2) | 0 (0.0) | 0 | 0.998 |
Total | 285 | 25 | 310 | 10 | 6 | 6 | 285 (85.8) | 47 (14.2) | – | – |