Table 1.
Mean values and standard deviation of the parameters observed for the entire normal group (column A), the normal subjects selected according to the age (column B), and the spondylolysis group (column C)
| Normal Total pop. n=145 Men 72, Women 73 |
Normal (15–42 years) n=66 Men 33, Women 33 |
Spondylolysis (15–42 years) n=35 Men 25, Women 10 |
Normal subject Total/15–42 years |
Normal subject TT/spondylolysis |
Young normal subject/spondylolysis | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | Mean | SD | ε Student | Sign | ε Student | Sign | ε Student | Sign | |
| Age (years) | 40.7 | 18.7 | 26.5 | 8.4 | 24.6 | 9.6 | 5.558 | *** | 7.168 | *** | 0.987 | NS |
| Pelvic incidence (PI) | 50.2 | 10.6 | 49.6 | 10.35 | 62. | 11 | 0.389 | NS | 5.731 | *** | 5.546 | *** |
| Sacral slope (SS) | −38.8 | 6.6 | -39 | 6.3 | −47.4 | 8.1 | 0.211 | NS | 5.831 | *** | 5.338 | *** |
| Pelvic tilting (PT) | 11.5 | 5.9 | 10.6 | 5.7 | 14.7 | 3.7 | 1.052 | NS | 4.028 | *** | 4.362 | *** |
| Lumbar lordosis (LL) | 63.7 | 7.9 | 64.4 | 7.8 | 73.1 | 8.8 | 0.682 | NS | 5.782 | *** | 4.914 | *** |
| Jackson’s angle (PR-S1) | 35.2 | 9.6 | 35.8 | 9.2 | 24.3 | 10 | 0.433 | NS | 5.832 | *** | 5.652 | *** |
| Sacral inclination (SI) | 51 | 7.6 | 51.7 | 6.9 | 57.2 | 8.4 | 0.662 | NS | 3.99 | *** | 3.324 | *** |
| Pelvic angle (PA) | 16.1 | 5.1 | 15.2 | 4.9 | 18.3 | 2.8 | 1.221 | NS | 3.464 | *** | 4.043 | *** |
| Sacral table angle (STA) | 102.2 | 5.4 | 102.7 | 5.2 | 99.8 | 5.3 | 0.64 | NS | 2.396 | * | 2.634 | ** |
| Femoro-sacral posterior Angle (FSPA) | 67 | 9.6 | 66.9 | 8.9 | 75.5 | 9.2 | 0.074 | NS | 4.864 | *** | 4.521 | *** |
| A | B | C | D | E | F | |||||||
The values were compared between normal and spondylolysis groups: between the two normal groups (column D), between the spondylolysis group and (column E) the entire normal group, and (column F) the age-selected normal group
NS Not significant
*P<0.05; **P<0.01; ***P<0.001