Osteochondritis dissecans of the knee
Osteochondritis dissecans (OCD) most commonly affects the knee. See osteochondritis dissecans article for a general discussion.
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Pathology
Location
The condition occurs bilaterally in 25% of cases, and has a characteristic distribution:
- medial condyle: 85% 2,4
- "classic" lateral surface of the medial condyle: 69%
- lateral condyle: 15%
- inferocentral portion: 13% 4
- anterior surface: 2%
- patello-femoral groove: uncommon
- 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:
See also
-
osteochondritis dissecans (general discussion):
- osteochondritis dissecans of the ankle: talus
- osteochondritis dissecans of the elbow: capitellum
Related articles
Knee pathology
The knee is a complex synovial joint that can be affected by a range of pathologies:
- bone and cartilage
-
knee fractures
- distal femoral condyle fracture
- tibial plateau fracture (classification)
- patella fracture
-
avulsion fractures of the knee
- Segond fracture
- reverse Segond fracture
- anterior cruciate ligament avulsion fracture
- posterior cruciate ligament avulsion fracture
- arcuate complex avulsion fracture (arcuate sign)
- biceps femoris avulsion fracture
- iliotibial band avulsion fracture
- semimembranosus tendon avulsion fracture
- Stieda fracture (MCL avulsion fracture)
- patella fracture
- chronic avulsion injuries
- dislocation
- chondromalacia patellae
- osteoarthritis of the knee
- osteochondral defects
- osteochondritis dissecans of the knee
- pattern of bone contusion in knee injuries
-
knee fractures
- ligaments
- tendons
- meniscal lesions
- synovial lesions
- fat pad
- popliteal fossa
- alignment
- gamut
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