METHODS One hundred nineteen patients with thoracolumbar OVCFs were included in this study. We divided all patients into two groups: the low-oedema group (BME ≤ 75%) and the high-oedema group (BME > 75%). To reduce the error generated in the acute phase of fracture, we separately analysed patients in phases I (within one month) and II (more than one month). We compared the differences between the groups using the Mann-Whitney U test and investigated the correlations using Spearman’s correlation test.
RESULTS The degree of BP was significantly correlated with BME (p < 0.001; p < 0.001) and fibrous tissue content (p = 0.006; p = 0.035) in both phases. Further, the fibrous tissue content in the low-oedema group (12.49 ± 7.37%; 15.25 ± 13.28%) was significantly lower than that in the high-oedema group (25.68 ± 20.39%, p = 0.014; 23.92 ± 14.61%, p = 0.022) in both phases. The lamellar bone content was significantly correlated with BP (p = 0.021) in phase II.
CONCLUSIONS BME signals on MRI can accurately predict the degree of BP, and the main mechanisms are related to the stimulation of fibrous tissue.