Table 1.
Significant homologous variables: evaluation test of the mean of the difference test between right and left by pairing series
| Difference between right and left | Student's t-test | |||||
|---|---|---|---|---|---|---|
| Variable | Mean | SD | min. | max. | P | |
| 1 acetabular diameter | −0.30 | 1.99 | −5.3 | 2.7 | 0.607 | NS |
| 2 sacral–acetabular diameter | −2.01 | 5.05 | −11 | 4.4 | 0.196 | NS |
| 3 upperplate S1–acetabulum | −0.37 | 5.67 | −9.6 | 8.2 | 0.826 | NS |
| 4 sacroiliac–acetabulum (length) | 6.62 | 4.15 | 0.2 | 13 | 0.000 | S*** |
| 5 scalenion–acetabulum | 8.41 | 5.57 | 2.5 | 23 | 0.001 | S*** |
| 6 sacroiliac–acetabulum (angle) | −25.23 | 13.44 | −37 | 6.1 | 0.000 | S*** |
| 7 pelvic oblique diameter | 2.59 | 7.51 | −6.6 | 17 | 0.256 | NS |
| 8 lateral sacral mass/pelvic breadth | −0.20 | 0.02 | −0.3 | −0.2 | 0.000 | S*** |
| 9 lateral sacral mass/sacral breadth | −0.01 | 0.06 | −0.1 | 0.1 | 0.600 | NS |
| 10 symphysis pubis–apex iliac crest | 0.03 | 3.60 | −7 | 5.3 | 0.976 | NS |
| 11 hipbone length | 1.20 | 4.93 | −7.5 | 7.5 | 0.418 | NS |
| 12 symphysis pubis height | 0.86 | 1.08 | −0.7 | 2.9 | 0.019 | S* |
| 13 symphysis pubis slope | 0.10 | 3.59 | −5.7 | 5.6 | 0.922 | NS |
| 14 horizontal greater sciatic notch | 1.74 | 3.89 | −3.1 | 9.4 | 0.148 | NS |
| 15 pelvic general index | −1.12 | 3.23 | −5.7 | 3.6 | 0.253 | NS |
| 16 superior iliac spine length | −0.20 | 2.76 | −7 | 3.9 | 0.803 | NS |
| 17 apex iliac crest–ischial tuberosity | −0.41 | 2.69 | −4.7 | 4.2 | 0.608 | NS |
| 18 antero-superior iliac spine–ischial tuberosity | 0.37 | 2.21 | −4.5 | 3.5 | 0.575 | NS |
| 19 postero-superior iliac spine–ischial tuberosity | 0.66 | 4.65 | −7.2 | 9.2 | 0.631 | NS |
| 20 great axis of obturator foramen | 2.44 | 2.45 | −2.5 | 5.9 | 0.005 | S** |
| 21 antero-superior iliac spine-tubercle of iliac crest | −0.16 | 6.05 | −11 | 7.5 | 0.929 | NS |
| 22 apex of iliac crest–acetabulum | −1.21 | 1.32 | −4.2 | 0.8 | 0.013 | S** |
| 23 minimal ilium breadth | −0.17 | 2.45 | −3.7 | 4.7 | 0.817 | NS |
| 24 pubis length | 1.16 | 2.82 | −3.7 | 4.2 | 0.201 | NS |
| 25 antero-superior iliac spine–acetabulum | 0.79 | 2.74 | −3.3 | 7.1 | 0.360 | NS |
| 26 ilio-ischium angle | 3.05 | 6.67 | −5.1 | 17 | 0.160 | NS |
| 27 ilio-pubic angle | −2.11 | 6.33 | −15 | 7.6 | 0.294 | NS |
| 28 ischio-pubic angle | −0.41 | 5.20 | −8.5 | 10 | 0.798 | NS |
| 29 iliac crest orientation | 14.57 | 10.55 | 41 | 0 | 0.000 | S*** |
| 30 iliac crest tubercle (apex) thickness | −1.02 | 4.15 | −9.1 | 5.8 | 0.415 | NS |
| 31 iliac crest tubercle (anterior) thickness | −2.26 | 4.09 | −8.7 | 7.5 | 0.081 | NS |
| 32 iliac crest tubercle (posterior) thickness | 1.03 | 8.86 | −11 | 22 | 0.695 | NS |
| 33 antero-superior iliac buttress | 0.44 | 1.12 | −1.7 | 2.3 | 0.201 | NS |
| 34 anterior medial iliac buttress | 1.05 | 1.40 | −0.3 | 3.3 | 0.025 | S* |
| 35 antero-inferior iliac buttress | 0.27 | 1.74 | −2 | 3.7 | 0.605 | NS |
| 36 anterior iliac buttress base | −0.77 | 3.39 | −4.1 | 8.7 | 0.448 | NS |
| 37 medio-superior iliac buttress | −0.92 | 1.22 | −2.8 | 1.1 | 0.024 | S* |
| 38 medio-medial iliac buttress | 0.20 | 1.52 | −2 | 2.3 | 0.653 | NS |
| 39 medio-inferior iliac buttress | 0.80 | 1.88 | −1.1 | 5.1 | 0.167 | NS |
| 40 medium iliac buttress base | 1.14 | 3.26 | −3.8 | 6.2 | 0.251 | NS |
| 41 postero-superior iliac buttress | −0.88 | 1.92 | −6.1 | 1 | 0.142 | NS |
| 42 postero-medial iliac buttress | 0.31 | 2.11 | −3.1 | 5 | 0.622 | NS |
| 43 postero-inferior iliac buttress | 2.57 | 3.55 | −2.4 | 9.3 | 0.029 | S* |
| 44 posterior iliac buttress base | 3.01 | 4.74 | −4.3 | 13 | 0.050 | NS (borderline) |
| 45 greater sciatic notch (angle) | −1.04 | 4.15 | −8.5 | 4.2 | 0.426 | NS |
| 46 posterior upper sacral plate–ischial tuberosity | 1.13 | 4.71 | −9.7 | 10 | 0.422 | NS |
| 47 posterior upper sacral plate–ischio-pubic ramus | 0.15 | 4.00 | −9.1 | 5.4 | 0.896 | NS |
| 48 posterior upper sacral plate–ischio-pubic ramus inferior | 0.66 | 4.11 | −8.7 | 6.1 | 0.589 | NS |
| 49 posterior upper sacral plate–obturator foramen | 0.84 | 4.52 | −11 | 6.5 | 0.530 | NS |
| 50 posterior upper sacral plate–ilio-pubic ramus | −0.33 | 4.51 | −8.4 | 6.1 | 0.804 | NS |
| 51 medial upper sacral plate–ischial tuberosity | 0.72 | 4.63 | −9.2 | 11 | 0.600 | NS |
| 52 medial upper sacral plate–ischio-pubic ramus | −0.21 | 3.86 | −8.7 | 4.2 | 0.851 | NS |
| 53 sacral plane breadth | 0.64 | 1.93 | −3.1 | 3.3 | 0.278 | NS |
| 54 lateral sacral mass orientation | 0.50 | 8.08 | −16 | 13 | 0.835 | NS |
| 55 growth vector (x) | 0.09 | 0.16 | −0.1 | 0.5 | 0.112 | NS |
| 56 growth vector (y) | 0.04 | 0.25 | −0.5 | 0.5 | 0.576 | NS |
| 57 growth vector (z) | 0.05 | 0.10 | −0.1 | 0.2 | 0.120 | NS |
| 58 sacro-iliac joint height | 0.57 | 3.78 | −2.9 | 11 | 0.542 | NS |
| 59 auricular surface (angle) | −3.03 | 5.95 | −12 | 5.7 | 0.122 | NS |
| 60 axis of acetabulum | 14.72 | 4.95 | −24 | −9.6 | 0.000 | S*** |
| 61 central cosine of acetabulum axis (x) | 0.01 | 0.07 | −0.1 | 0.1 | 0.651 | NS |
| 62 central cosine of acetabulum axis (y) | 0.02 | 0.10 | −0.2 | 0.2 | 0.607 | NS |
| 63 central cosine of acetabulum axis (z) | −0.03 | 0.08 | −0.1 | 0.1 | 0.216 | NS |
| 64 axis (bis) of acetabulum | −2.34 | 7.67 | −16 | 6.6 | 0.335 | NS |
| 65 slope of iliac blade | 2.28 | 2.08 | −1.9 | 5 | 0.003 | S** |
| 66 ilio-sacral angle | −0.34 | 5.51 | −10 | 7.6 | 0.842 | NS |
| 67 semi-pelvic spacer | 0.18 | 2.08 | −2.8 | 4 | 0.772 | NS |
| 68 Wiberg | −15.47 | 4.33 | −22 | −9 | 0.000 | S*** |
| 69 Hilgenreiner (superior lunate surface obliqueness) | −23.34 | 17.06 | −45 | 2.7 | 0.001 | S*** |
| 70 acetabulum sphericity | −0.84 | 2.52 | −5.8 | 3.3 | 0.297 | NS |
| 71 lateral Incidence | 1.65 | 7.76 | −14 | 19 | 0.496 | NS |
*
P < 0.05
**
0.001 < P < 0.01
***
P < 0.001; alpha = 5%.