Grading of Stress Fractures on the Basis of Radiologic Findings :
Grade |
Radiographic Finding |
Bone Scan Finding |
MRI Finding |
1 |
Normal |
Poorly defined area |
Increased activity on STIR image |
2 |
Normal |
More intense |
Poor definition on STIR and T2-weighted images |
3 |
Discrete line |
Sharp area of uptake |
No focal or fusiform cortical break on T1- and T2-weighted images |
4 |
Fracture or periosteal reaction |
More intense localized transcortical uptake |
Fracture line on T1- and T2-weighted images |