"The HKA is measured on a weight-bearing, full-length AP lower limb radiograph. The first line is drawn from the femoral head to the femoral intercondylar notch, while the latter from the tibial interspinous point to the tibial mid-plafond. The HKA is defined as the angle between these two lines 2."
Expected headings
"Normal values in children"
"Normal values in adults"