Table 2: Grading scale of stress fractures based on MRI findings. Allows for analysis of severity and appropriate treatment options.
Grade | Frederickson Description | Type | Treatment |
1 (Low) | Mild to moderate periosteal edema on T2; normal marrow on T2 and T1 | Compression | Generally non-surgical unless > 50% |
2 (Low) | Moderate to severe periosteal edema on T2; marrow edema on T2 but not T1 | Tensile | Generally surgical, individually based decision |
3 (High) | Moderate to severe periosteal edema on T2; marrow edema on T2 and T1 | Displaced | Surgical emergency for reduction and fixation |
4 (High) | Moderate to severe periosteal edema on T2; marrow edema on T2 and T1 with fracture line | Atypical tensile | Non-Surgical |