Table 3 The frequency of bone cement leakage into the spinal canal
T6 | T7 | T8 | T9 | T10 | T11 | T12 | L1 | L2 | L3 | L4 | L5 | Total | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Single vertebra | 6 | 4 | 12 | 8 | 20 | 32 | 41 | 39 | 30 | 16 | 15 | 11 | 234 |
Double vertebrae | 5 | 7 | 8 | 11 | 13 | 8 | 30 | 24 | 22 | 16 | 11 | 9 | 164 |
Three vertebrae | 2 | 5 | 3 | 5 | 9 | 11 | 10 | 9 | 5 | 2 | 1 | 1 | 63 |
Four vertebrae | 1 | 2 | 3 | 3 | 5 | 8 | 11 | 8 | 5 | 3 | 1 | 2 | 52 |
Five vertebrae | 1 | 2 | 2 | 2 | 3 | 5 | 6 | 4 | 4 | 1 | 3 | 2 | 35 |
Total | 15 | 20 | 28 | 29 | 50 | 64 | 98 | 84 | 66 | 38 | 31 | 25 | 548 |
The amounts of bone cement leakage(n) | 1 | 2 | 2 | 3 | 5 | 7 | 11 | 5 | 2 | 1 | 1 | 0 | 40 |
The rates of bone cement leakage (%) | 6.7 | 10.0 | 7.1 | 10.3 | 10.0 | 10.9 | 11.2 | 5.9 | 3.0 | 2.7 | 3.2 | 0 | 7.3 |