Morphologic analysis of BME
| Nulliparous (NP) | Early post partum (EPP) | Late post partum (LPP) | P value | ||||||
| n=31 | n=20 | n=30 | NP versus EPP | NP versus LPP | EPP versus LPP | ||||
| Mean±SD | (Range) | Mean±SD | (Range) | Mean±SD | (Range) | ||||
| Depth (mm) | 7.2±2.8 | (3–16) | 8.8±5.0 | (3–19) | 7.3±4.0 | (2–16) | 0.580 | 0.620 | 0.340 |
| Length (mm) | 12±5.4 | (4–25) | 20±11.4 | (5–57) | 17.1±7.6 | (3–31) | 0.002 | 0.006 | 0.579 |
| No of slices on which BME was visible | 2.3±1.1 | (1–5) | 3.1±1.5 | (1–5) | 2.7±1.2 | (1–5) | 0.207 | 0.649 | 0.686 |
| n (%) | n (%) | n (%) | |||||||
| Side | 0.040 | 0.680 | 0.076 | ||||||
| Sacral only | 16 (52) | 7 (35) | 12 (40) | ||||||
| Iliac only | 7 (23) | 1 (5) | 8 (27) | ||||||
| Both sacral and iliac | 8 (26) | 12 (60) | 10 (33) | ||||||
| Location | 0.264 | 0.107 | 0.136 | ||||||
| Superior | 2 (6) | 4 (20) | 1 (3) | ||||||
| Central | 20 (65) | 13 (65) | 26 (87) | ||||||
| Inferior | 9 (29) | 3 (15) | 3 (10) | ||||||
NP, had never given birth.
EPP, had given birth within the 12 months preceding MRI acquisition.
LPP, had given birth more than 24 months prior to MRI acquisition.
Underlined p-values are statistically significant.
BME, bone marrow oedema.