MRI was consistent with early changes of osteomyelitis of the head of the first metatarsal bone.

Aspiration was performed: 

Specimen Type : Synovial Fluid

CRYSTAL EXAMINATION (POLARIZATION MICROSCOPY): Sodium Urate Crystals NOT Detected Calcium Pyrophosphate Crystals NOT Detected

GRAM STAIN Leukocytes +++ Epithelial Cells + Gram-positive cocci +

CULTURE 1. Staphylococcus aureus +++

SENSITIVITIES 1 Clindamycin S Cotrimoxazole S Erythromycin S Fusidic Acid S Oxacillin S Penicillin R Rifampin S Vancomycin S