Avascular necrosis of tibia with pathological fracture
Presentation
Acute pain left knee
Patient Data
Age: 50 years
Gender: Male
From the case:
Avascular necrosis of tibia with pathological fracture
X-ray
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Frontal
Depressed fracture of the medial tibial plateau.
There is an underlying lesion, which demonstrates a sclerotic margin, with central lucency. This lesion demonstrates a narrow zone of transition. There is associated thick irregular periosteal reaction.
Small knee joint effusion.
From the case:
Avascular necrosis of tibia with pathological fracture
CT
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Axial bone window
Subchondral lesion within the medial tibial plateau, with thick sclerotic margin, central lucency as well as dystrophic calcification.
There is an associated pathological depressed fracture of the medial tibial plateau.
Findings suggestive of osteonecrosis, with associated pathological fracture.
Case Discussion
Percutaneous biopsy demonstrated "bone with focal areas of necrosis", which confirms the diagnosis of osteonecrosis.
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