- See: Radiology of the Hip:
- Discussion:
- obtain view w/ 15 deg of internal rotation;
- draw a line at level of, & parallel to, ischial tuberosities and intersecting the lesser trochanter on each side;
- compare 2 points of intersection & measure difference to determine the amount of limb shortening;
- draw horizontal at level of proposed neck cut which may be used as a reference point during surgery;
- draw a horizontal line at the level of the greater trochanter & see where it intersects on head of femoral component;
- significant leg length descrepancies can partially be adressed w/ changing prosthetic offset and partially w/ femoral neck cut