Fig. 11.
Images from an intravenous drug user presenting with wrist pain and swelling. Lateral radiograph (a) shows a linear lucency with cortical disruption at the dorsal aspect of the distal radius (white arrow). In the absence of a history of trauma, this was consistent with inadvertent direct injection to the bone. Associated early osteomyelitis is seen on MRI with sagittal STIR (b) showing a linear region of high signal with corresponding hypointense signal on the coronal T1 image (c)