1-19. TANGENTIAL (AXIAL) PROJECTION (SUNRISE)
a. The Sunrise Knee. This position is frequently referred to as the sunrise
position, as the patella of the knee can be thought to resemble a sun hovering at the
line of horizon at sunrise.
b. Bilateral or Unilateral. The tangential (axial) projection may be done on one
knee (unilaterally) or on both knees (bilaterally). The picture above depicts a unilateral
tangential (axial) projection.