“Penumbra sign” in knee pain: a case of distal femur osteomyelitis
Hakan Koray Tosyali,
Adem Çakir
Abstract:“Penumbra sign” is a characteristic finding in magnetic resonance imaging (MRI) of Brodie's abscess, a rare variant of subacute osteomyelitis. We aimed to discuss the imaging finding penumbra sign that will help in the diagnosis of osteomyelitis and may be useful to clinicians in differential diagnosis. A 26-year-old male patient presented to the emergency department with complaints of pain and limping in the right knee that did not go away. He had a history of arthroscopic debridement and percutaneous fixatio… Show more
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