MRI
Sagittal T1
Sagittal T2 fat sat
Axial T1 fat sat
Axial T2
Axial T1 C+ fat sat
Well-circumscribed 24 x 14 x 16 mm ovoid lesion in the anterior inferior aspect of the right talus. The lesion is hyperintense on the fluid-related sequences, iso- to slightly hyperintense on T1. The lesion touches the inferior and anterior subarticular cortex of the talus. Although the lesion is spontaneously hyperintense on pre-contrast T1-Fat sat, there is moderate enhancement post-contrast injection.
Extensive bone marrow oedema at and around the talus.
No cortical break or associated pathological fracture.