Cooper et al (1985)
Associated with other pelvic insufficiency fractures
Causes include porosis, RA, RTP, steroids
Clinical features: severe hip and pelvic pain
Radiography:
Limited value, poor sensitivity
Band like or patchy subchondral sclerosis in paraacetabular area
CT:
Condensed sclerotic bone
Bone scintigraphy:
Intense tracer uptake in para-acetabular region
MRI:
Fracture seen as band of low signal on T1 and T2, surrounded by marrow edema seen as low signal on T1 and high signal on T2
Fracture line - curvilinear and parallel to acetabular roof, striaght and crossing acetabular roof in oblique way
Marked enhancement of adjacent area on Gd
References:
Theodorou SJ et al. Magnetic resonance imaging of para-acetabular insufficiency fractures in patients with malignancy . Clin Rad 2006: 181-190
