CHORUS

Collaborative Hypertext of Radiology

Musculoskeletal system

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pseudo-fracture (Looser zone)

• perpendicular to bone surface
• often multiple, +/- symmetrical
• +/- callus formation

• "pathognomonic" of osteomalacia
  • seen on compressive (concave) side (eg, prox femur)

• also seen in Paget dz on tensile (convex) side

Related CHORUS documents: osteomalacia Schmorl node vitamin D hyperparathyroidism renal osteodystrophy Caffey disease