Table 2.
Distribution of treated levels.
| Instrumentation | Level | Number of patients |
|---|---|---|
| 1-level (n = 31) | L3-4 | 3 (4.2%) |
| L4-5 | 23 (31.9%) | |
| L5-S1 | 5 (6.9%) | |
|
| ||
| 2-levels (n = 41) | L2-3-4 | 1 (1.4%) |
| L3-4-5 | 33 (45.8%) | |
| L4-5-S1 | 7 (9.7%) | |
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