Table 3 The results of American Orthopaedic Foot and Ankle Society (AOFAS) score and its variation after treatment by trauma history and MRI grade within each group.
Parameter | n | Pre-treatment | Post-treatment | Variation | P 3 value |
---|---|---|---|---|---|
Group A (n = 41) | |||||
Hepple MRI Grade | |||||
 Grade I | 11 | 53.4 ± 10.1 | 91.3 ± 12.6 | 38.1 ± 11.9 | 0.634 |
 Grade II | 24 | 50.2 ± 12.6 | 88.5 ± 10.2 | 37.9 ± 10.4 |  |
 Grade III | 6 | 48.9 ± 8.4 | 87.8 ± 9.1 | 38.3 ± 12.1 |  |
 P 1 value |  | 0.073 | 0.068 |  |  |
Trauma History | |||||
 Trauma | 26 | 49.3 ± 13.1 | 90.7 ± 12.8 | 41.3 ± 12.2 | 0.046 |
 No trauma | 15 | 52.7 ± 10.9 | 87.9 ± 11.9 | 36.1 ± 10.9 |  |
 P 2 value |  | 0.049 | 0.103 |  |  |
 Group B (n = 28) | |||||
 Hepple MRI Grade |  | 52.3 ± 12.1 | 79.1 ± 10.6 |  |  |
 Grade I | 8 | 51.1 ± 9.7 | 82.3 ± 8.1 | 32.1 ± 9.3 | 0.297 |
 Grade II | 18 | 53.5 ± 13.6 | 80.6 ± 12.0 | 27.7 ± 12.4 |  |
 Grade III | 2 | 47.5 ± 2.1 | 77.0 ± 1.4 | 29.5 ± 3.5 |  |
 P 1 value |  | 0.096 | 0.118 |  |  |
Trauma History | |||||
 Trauma | 19 | 51.9 ± 12.6 | 82.5 ± 13.3 | 32.7 ± 12.9 | 0.072 |
 No trauma | 9 | 52.7 ± 11.7 | 78.6 ± 11.4 | 27.3 ± 12.1 |  |
 P 2 value |  | 0.106 | 0.074 |  |  |