Looser zones
Dr MT Niknejad and Dr Frank Gaillard et al.
Looser's zones (also known as cortical infarctions) are wide transverse lucencies traversing bone usually at right angles to the involved cortex and are associated most frequently with osteomalacia and rickets . They are pseudofractures and considered a type of insufficiency fracture. Typically, the fractures have sclerotic irregular margins, and are often symmetrical.
Underlying conditions
- osteomalacia
- renal osteodytrophy
- fibrous dysplasia
- hyperthyroidism
- Paget's disease of bone
- X linked hypophosphataemia
- osteogenesis imperfecta
Location(s)
- pubic rami
- medial proximal femur
- lateral scapula
- posterior proximal ulna
- ribs
Etymology
Named after Emil Looser : Swiss surgeon (1877 - 1936)
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