The following should be clearly shown:
_ Evidence of proper collimation
_ Femoral head, penetrated and seen through the acetabulum
_ Regions of the ilium and pubic bones adjoining the pubic symphysis
_ Any orthopedic appliance in its entirety
_ Hip joint
_ Greater trochanter in profile
_ Entire long axis of the femoral neck not foreshortened
_ Proximal one third of the femur
_ Lesser trochanter is usually not projected beyond the medial border of the femur, or only a very small amount of the trochanter is seen.
(Frank et al. Merrill’s Atlas of Radiographic Positioning and Procedures: 3-Volume Set, 12th Edition. Mosby, 022011. p. vol1-347).
–No rotation of pelvis
•ASIS to table top distance equal on both sides
–Medially rotate lower limb and foot about
15 to 20 degrees
•Places femoral necks parallel to IR
–Perpendicular to femoral neck
_ Perpendicular through the hip joint, which is located midway between ASIS and pubic symphysis for the Lauenstein method and at a cephalic angle of 20 to 25 degrees for the Hickey method
_ Center the IR to the central ray.
–Adjustment may be necessary if orthopedic device is present
–Size of IR