The distal femoral condyles have distinct features that can be used for differentiation and hence positional errors that can be corrected.
The medial condyle has a medial adductor tubercle
The lateral condyle has the condylopatellar sulcus
These landmarks are a lot more reliable than the fibular head.
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Rotation
- medial adductor tubercle is anterior to the lateral condyle
- rotate the knee internally to bring it posteriorly
Abduction and adduction
- medial condyle is proximal to the lateral condylar
- perform adduction
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Rotation
- medial adductor tubercle is anterior to the lateral condyle
- rotate the knee internally to bring it posteriorly
Abduction and adduction
- medial condyle is proximal to the lateral condylar
- perform adduction
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Rotation
- medial adductor tubercle is posterior to the lateral condyle
- rotate the knee externally to bring it anterior
Abduction and adduction
No change needed
Case Discussion
Rotation
- medial adductor tubercle is posterior to the lateral condyle
- rotate the knee externally to bring it anterior
- medial adductor tubercle is anterior to the lateral condyle
- rotate the knee internally to bring it posteriorly
Abduction and adduction
- medial condyle is proximal to the lateral condylar
- perform adduction
- medial condyle is distal to the lateral condyle
- perform abduction