Table 2. Mean values (in mm) and comparisons of linear parameters between normal/typical and transitional L5-S1 variations in female sacra. Standard deviations are provided in parenthesis.
| Linear dimensions | Normal/typical sacra n = 78 |
Sacra with accessory articulation n = 13 |
Sacra with complete and bilaterally fused L5 n = 9 |
Sacra with partial lumbarization of S1 n = 2 |
Sacra with complete lumbarization of S1 n = 8 |
|---|---|---|---|---|---|
| SH | 98.0 ± 9.2 | 90.2 ± 8.6 | SH 97.5 ± 10.6 SH+L5 110.7 ± 09.4 SH-L5 83.4 ± 10.1* |
97.3 ± 11.7 | 87.8 ± 13.2* |
| IAD | 108.7 ± 11.0 | 104.2 ± 7.6 | 102.2 ± 8.5 | 104.1 ± 14.8 | 99.5 ± 9.0 |
| BW | 40.3 ± 7.0 | 38.6 ± 7.2 | 43.5 ± 6.0 | 40.1 ± 3.1 | 36.6 ± 5.6* |
| AH | 56.2 ± 4.6 | 53.0 ± 5.7 | 54.8 ± 5.4 | 55.8 ± 4.2 | 48.6 ± 4.3 |
SH: sacral height; IAD: interauricular distance; BW: sacral body width; AH: auricular height. *Significant at p < 0.050.