Table 3.
Effect of lumbar 4 spondylolisthesis on the distance between BPSs and ALVs
| Group | L4 | L5 | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 5 | 10 | 10 | 15 | ||||||||||
| N | ≥ | < | N | ≥ | < | N | ≥ | < | N | ≥ | < | ||
| Left | C | 58 (54.2%) | 39 (36.4%) | 10 (9.3%) | 16 (15%) | 60 (56.1%) | 31 (29%) | 8 (7.5%) | 18 (16.8%) | 81 (75.7%) | 5 (4.7%) | 4 (3.7%) | 98 (91.6%) |
| S | 42 (80.8%) | 8 (15.4%) | 2 (3.8%) | 17 (32.7%) | 27 (51.9%) | 8 (15.4%) | 8 (15.4%) | 16 (30.8%) | 28 (53.8%) | 9 (17.3%) | 8 (15.4%) | 35 (67.3%) | |
| P | 0.004 | 0.018 | 0.02 | 0.001 | |||||||||
| Right | C | 2 (1.9%) | 14 (13.1%) | 91 (85%) | 4 (3.7%) | 24 (22.4%) | 79 (73.8%) | 11 (10.3%) | 17 (15.9%) | 79 (73.8%) | 15 (14%) | 4 (3.7%) | 88 (82.2%) |
| S | 12 (23.1%) | 19 (36.5%) | 21 (40.4%) | 8 (15.4%) | 19 (36.5%) | 25 (48.1%) | 12 (23.1%) | 16 (30.8%) | 24 (46.2%) | 15 (28.8%) | 8 (15.4%) | 29 (55.8%) | |
| P | 0.000 | 0.000 | 0.003 | 0.001 | |||||||||
Note: C Control group, S Spondylolisthesis group, N, ≥ and < represented non-contact, distant and close ALV respectively