A Pediatric Radiology textbook and Pediatric Radiology digital library
Stress Fracture
Etiology: repetitive microtrauma to normal bone
Radiograph: fracture represented by lucency, may see marked cortical thickening in area of injury
MRI: periosteal + marrow edema, may show fracture line
DDX: Ewing sarcoma, no extra osseous soft tissue mass favors stress fracture over Ewing sarcoma
Cases of Stress Fracture
AP and lateral radiographs of the femur show on the AP view a transverse non-displaced healing fracture through the distal femoral diaphysis that on the lateral view has periosteal reaction and marked cortical thickening along the posterior aspect of the femur.