Comparison of the incidence of uncommon pathway of segmental arteries
| High-Level Segmental Arteries (from T8 to L1) | Low-Level Segmental Arteries (from L2 to L4) | |
|---|---|---|
| Common pathway (zones B and C) | 443 (95.5%) | 211 (87.5%) |
| Uncommon pathway (zones A and D)a | 21 (4.5%) | 30 (12.5%) |
a P < .05, Pearson χ 2 test.