Stanford MSK Atlas of MSK Measurements

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DEFINITION:
Using the AP view of the knee, angle formed between femur axis and tibia axis. Tibiofemoral angle positive if both axes have external concavity; negative if both axes have internal concavity.

ABNORMAL:
if < 0 degrees then varus deformity ( RID4769 )
if > 10 degrees then valgus deformity ( RID4768 )

RADLEX:
knee ( RID2743 ), knee joint ( RID2751 ), tibia ( RID2885 ), femur ( RID2662 )

how to draw the tibiofemoral angle