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Anatomic Axis

- Discussion:
      - anatomic axis of femur is approx 6 deg of valgus from mechanical axis or 9 deg of valgus from vertical axis w/ variations according to 
            body habitus;
      - anatomic axis of tibia is in approx 2-3 deg of varus from mechanical axis;
      - lines that intersect the tibia and the femur intersect at knee;
             - this angle averages 6 deg