Musculoskeletal ImagingPseudofracture
a lucent area on radiographs that is oriented at right angles to the cortex and extends from the surface completely across the diameter of the bone. Such lesions are also known as
Loosers zones and are considered to be a form of insufficiency type of
stress fracture. Typical sites of involvement are the axillary margins of the scapula, ribs, pubic rami, proximal ends of the femora and ulna. Frequently sclerosis occurs at margins between bones, and callus-like new bone is observed at the periosteal margin.
DR