Case of osteonecrosis of the navicular bone of left foot.

Findings in favor of pathology:

• male child of pediatric age group (4-6yrs)
• suspicious areas of sclerosis on X-ray in the navicular and head of talus
• STIR hyperintensity representing bone edema
• no enhancement except for a peripheral rim of enhancement 

The peripheral enhancing areas probably represent areas of hyperemia due to granulation tissue formation and bone repair.