Hip, Pelvis, Femur CR centering

Femoral neck can be located

1-2" medial and 3-4" distal to ASIS

AP projection - Femur - mid and distal - CR Lateral - mediolateral or lateromedial projections femur: mid and distal (trauma) - CR Lateral - mediolateral projection (nontrauma): femur - mid and proximal - CR

midpoint of IR Perpendicular

AP unilateral hip projection: hip and proximal femur - CR

perpendicular 1 or 2" distal to midfemoral neck (Femoral neck can be located 1-2" medial and 3-4" distal to ASIS)

AP pelvis projection (bilateral hips): pelvis - CR

perpendicular midway b/w level of ASISs and symphysis pubis OR 2" inferior to level of ASIS OR light field at iliac crest or slightly above

PA axial oblique projection (Teufel Method) - CR

perpendicular 1" superior to level of greater trochanter 2" lateral to midsag plane Angle CR 12° cephalad

Axiolateral inferosuperior projection: hip and proximal femur - trauma (Danelius-Miller Method) - CR

perpendicular to fem neck and to IR

Unilateral frog-leg projection - mediolateral:hip and proximal femur - modified Cleaves method - CR

perpendicular to midfem neck (3-4" distal to ASIS)

AP bilateral "frog-leg" Modified Cleaves Method projection: pelvis - CR

top of IR approximately at iliac crest CR at femoral heads - 3" below ASIS OR 1" above symphysis pubis

Posterior oblique pelvis-acetabulum - Judet Method - CR

when downside is of interest, center CR perpendicular and 2" distal and 2" medial to downside ASIS when upside is of interest, center CR perpendicular and 2" distal to upside ASIS

modified axiaolateral-possible trauma projection: hip and proximal femur - Clements-Nakayama method - CR centering

Angle CR mediolaterally 15-20° to be perpendicular to the femoral neck.

AP axial "inlet" projection: pelvis - CR

40° caudad angle (near perpendicular to plane of inlet) Midline at level of ASIS

PA axial oblique projection (Teufel Method) - CR angle

12° cephalad

modified axiaolateral-possible trauma projection: hip and proximal femur - Clements-Nakayama method - CR angle

15° tilt from horizontal - compensates for leaving leg in neutral (anatomic) position.

AP axial "outlet" Taylor Method projection for anterior/inferior pelvic bones): pelvis - CR

20-35° cephalic angle for males 30-45° cephalic angle for females 1-2" distal to symphysis pubis or greater trochanter