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Distributions of involved vertebral bodies and lumbar fusion sites
| Group | Affected vertebra(e) | Fusion site | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| L2 | L2–3 | L3 | L4 | L3–4 | L4–5 | L5 | L2–3 | L3–4 | L4–5 | L5–S1 | |
| A (n = 52) | 2 (3.8 %) | 6 (11.5 %) | 5 (9.6 %) | 6 (11.5 %) | 9 (17.3 %) | 19 (36.5 %) | 5 (9.6 %) | 8 (15.4 %) | 13 (25 %) | 25 (48.1 %) | 6 (11.5 %) |
| B (n = 57) | 3 (5.3 %) | 7 (12.3 %) | 7 (12.3 %) | 15 (26.3 %) | 7 (12.3 %) | 12 (21.1 %) | 6 (10.5 %) | 6 (10.5 %) | 13 (22.8 %) | 27 (47.4 %) | 11 (19.3 %) |
