osteochondritis dissecans of the knee
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School ager
with knee pain. AP radiograph of the knee shows fragmentation of the lateral aspect of the medial epicondyle of the knee.The diagnosis was osteochondritis dissecans of the knee.
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Osteochondritis
dissecans of the knee • Osteochondritis of the knee (illustration) - Ganzer Fall bei Radiopaedia
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Osteochondritis
dissecans of the knee • Osteochondritis dissecans - Ganzer Fall bei Radiopaedia
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Osteochondritis
dissecans of the knee • Osteochondritis dissecans grade I - Ganzer Fall bei Radiopaedia
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Osteochondritis
dissecans of the knee • Patellar osteochondritis dissecans - Ganzer Fall bei Radiopaedia
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Osteochondritis
dissecans of the knee • Osteochondritis dissecans - Ganzer Fall bei Radiopaedia
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Osteochondritis
dissecans of the knee • Osteochondritis dissecans - Ganzer Fall bei Radiopaedia
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Osteochondritis
dissecans • Osteochondritis dissecans (knee) - Ganzer Fall bei Radiopaedia
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Osteochondritis
dissecans • Osteochondritis dissecans - Ganzer Fall bei Radiopaedia
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Osteochondritis
dissecans • Osteochondritis dissecans - Ganzer Fall bei Radiopaedia
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Osteochondral
defect • Osteochondral defect - Ganzer Fall bei Radiopaedia
Osteochondritis dissecans (OCD) most commonly affects the knee. See osteochondritis dissecans article for a general discussion.
Pathology
Location
The condition occurs bilaterally in 25% of cases, and has a characteristic distribution :
- medial condyle: ~78.5% (range 70-85%)
- "classic" lateral surface of the medial condyle: ~70%
- this can be remembered by the mnemonic "LAME"; Lateral Aspect of the Medial Epicondyle
- lateral condyle: 15%
- inferocentral portion: 13%
- anterior surface: 2%
- patella: ~7.5% (range 5-10%)
- typically inferomedial
- patellofemoral groove (femoral trochlea): <1%
- weight-bearing surface of the tibia: uncommon
Radiographic features
These are discussed in the general article on osteochondritis dissecans.
Differential diagnosis
The differential diagnosis includes:
- normal fusing apophysis: painless
- acute osteochondral fracture
In older patients consider:
- insufficiency fracture
- subchondral insufficiency fracture of the knee
See also
- osteochondritis dissecans (general discussion)
- osteochondritis dissecans of the ankle: talus
- osteochondritis dissecans of the elbow: capitellum
Siehe auch:
- Insuffizienzfraktur
- Osteochondrosis dissecans
- Ossifikationszentren Kniegelenk
- subchondrale Insuffizienzfraktur des Knies
- Knochenmarködem-Syndrom des Knies
und weiter:
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