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AKA lisfranc injury
Explanation
Early on are completely normal, but with ongoing problem, one sees progressively : Osteopenia Central radiolucency with a sclerotic border A Subchondral lucency - making up the “crescent sign” Flattening of the head. Collapse of the head. Secondary changes of Osteoarthritis. Joint space narrowing Progressive joint destruction Since the X-Rays may be completely normal - it is essential to be able to see the problem early. Two main methods exist for early diagnosis. Magnetic Resonance Scanning. This was first used for AVN in 1983 One Requires T1 and T2 axial and coronal views. Signs on MRI are: Low Subchondral intensity (96%) A margin of low signal (60-80%) A double line sign (50-80%) Joint fluid
AKA pseudo jones fracture
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