Active osteomyelitis versus active charcot.

1- Active osteomyelitis is a bony disease while charcot is a joint disease.
2-Inspection:
- Acute osteomyelitis shows hot red foot with ulcer and sinus with affection of the forefoot and hindfoot.
- Acute charcot shows hot red foot with no ulcer or sinus with affection of midfoot.
3-MRI findings:
-Acute osteomyelitis shows bone marrow edema in forefoot and hindfoot near an ulcer and or sinus in the skin with positive Ghost sign.
- Acute charcot shows marrow edema in midfoot subchondral with negative Ghost sign.

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Reference of image.