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Review Question - QID 8440

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QID 8440 (Type "8440" in App Search)
Figure 99a is a CT scan at the level of the distal femur and femoral component. What is the orientation of the femoral component in the CT scan?
  • A

Properly rotated

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0/0

Internally rotated

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Externally rotated

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Excessive flexion

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  • A

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A CT scan with metal artifact reduction is a useful study to evaluate femoral component rotation. Proper rotation would show that the transepicondylar line and posterior condylar line are parallel. Figure 99b shows that the femoral component is internally rotated compared to the femoral epicondylar axis.

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