RT Journal
A1 Cooke, T. Derek V.
A1 Tang, W. M.
A1 Zhu, Y. H.
A1 Chiu, K. Y.
T1 Definition of Axial Alignment of the Lower Extremity
JF The Journal of Bone & Joint Surgery
JO The Journal of Bone & Joint Surgery
YR 2002
FD January 1
VO 84
IS 1
SP 146
OP 147
DO 
UL http://dx.doi.org/
AB 
Tang et al. defined axial alignment with use of weight-bearing
radiographs of the entire lower limb, including the hips and ankles.
The mechanical axis, hip center, midpoints for the knee (defined as
the center point of the femoral condyles and the center of the tibial
plateau), and center of the tibial plafond were used as reference
points. The mechanical axis of the femur was defined as the line
joining the center of the femoral head to the center of the knee,
and that of the tibia was defined as the line from the center of
the knee to the center of the ankle.