PMC4845417_01
Radiograph of left ankle after 1 month after injury: solid, smooth periosteal reaction at posterior aspect of left tibia.
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F1
Radiograph of his left ankle revealed solid, smooth periosteal reaction at posterior aspect of left distal tibia (Fig. 1).
CT of left ankle 6 months after injury: Thick, solid periosteal reaction at posterior aspect of left tibia. A: axial view; B: sagittal view.
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F2
MRI showed periosteal reaction at the corresponding site, which was better demonstrated in CT scan (Fig. 2).
MRI of left ankle 9 months after injury: well-marginated low T1 & T2 signal lesion at the corresponding site of left tibia, with no associated soft tissue mass seen. A: T1 Axial; B: STIR Sagittal; C: T1 Sagittal.
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F3
Follow up MRI at 9 months after the injury (Fig. 3) and CT at 1 year after the injury (Fig. 4) showed maturation of the new bone formation at the site of periosteal reaction.