Pathologic Femur Fracture in an Immunocompetent Healthy Young Adult due to Acute Osteomyelitis

Figure 2

CT scan of right femur in the same patient 3 days after fracture. (a) Sagittal reformat of noncontrast CT image shows both organized (open arrow) and disorganized periosteal reactions (white arrow). The permeative bone destruction is best depicted on CT (curved arrow). (b) Coronal reformat of contrast CT image shows a low-density collection/lesion with a thin enhancing rim (arrowhead) around the fracture. The organized thick periosteal bone formation (open arrow) surrounds a very dense spicule that resembles necrotic bone or sequestrum (long thin arrow).

(a)

(b)