RAD 110 - Ch 7 Femur & Pelvic Girdle - Positioning

AP Pelvis

What projection is this?

Pelvis Routine

- AP
- Bilateral Frog-Leg

Evaluation Criteria AP Pelvis

- Rotate limbs internally (nontrauma)
- CR midway between level of ASIS and symphysis pubis
- Entire pelvis and proximal femora included
- No rotation of pelvis
- Lesser trochanters not visible
- Optimal exposure factors

AP Bilateral Frog-Leg Pelvis

What projection is this?

Evaluation Criteria AP Bilateral Frog-Leg Pelvis

- Abduct femora 40� to 45�
- CR 3 inches (7.5 cm) below level of ASIS
- 20� to 30� abduction�less distortion of femoral neck
- Pelvic girdle centered horizontally
- No rotation of pelvis
- Lesser trochanters equal in size
- Greater trochanters superimpose

Upside Posterior Oblique Acetabulum (Judet Method)

What projection is this?

Evaluation Criteria Upside Posterior Oblique Acetabulum (Judet Method)

- CR 2 inches (5 cm) distal to upside ASIS
- Posterior rim and anterior ilioischial column demonstrated

Downside Posterior Oblique Acetabulum (Judet Method)

What projection is this?

Evaluation Criteria Downside Posterior Oblique Acetabulum (Judet Method)

- CR 2 inches (5 cm) distal and medial to downside ASIS
- Anterior rim and posterior ilioischial column demonstrated

AP Axial Outlet Pelvis (Taylor Method)

What projection is this?

Evaluation Criteria AP Axial Outlet Pelvis (Taylor Method)

- CR 20� to 35� cephalad (males), 30� to 45� cephalad (females)
- CR centered to 1-2 inches (3-5 cm) distal to symphysis pubis
- Elongated and magnified pubic and ischial bones
- No rotation of pelvis
- Pubic and ischial bones centered to collimation fiel

AP Axial Inlet Pelvis

What projection is this?

Evaluation Criteria AP Axial Inlet Pelvis

- CR 40� caudad at level of ASIS
- Ischial spines demonstrated and equal
- Pelvic inlet centered
- Lateral collimation evident
- Optimal exposure factors

Proximal Femur/Hip Routine

- AP
- Lateral

AP Unilateral Hip

What projection is this?

Evaluation Criteria AP Unilateral Hip

- CR perpendicular to midfemoral neck
- Proximal ? of femur included
- Hip joint space and acetabulum visualized
- Lesser trochanter not visible or only slightly visible
- Total existing orthopedic prosthesis demonstrated
- Optimal exposure factors

Unilateral Frog-Leg Hip (Modified Cleaves Method)

What projection is this?

Evaluation Criteria Unilateral Frog-Leg Hip (Modified Cleaves Method)

- Abduct femur 45� from vertical (for best demonstration of femoral head and acetabulum, abduct femur to 90� from vertical)
- CR perpendicular to midfemoral neck
- Entire femoral head, neck, and trochanters centered to IR
- Femoral head and neck in profil

Axiolateral Inferosuperior Hip (Danelius-Miller Method)

What projection is this?

Evaluation Criteria Axiolateral Inferosuperior Hip (Danelius-Miller Method)

- CR perpendicular to midfemoral neck
- Entire femoral head, neck, and acetabulum visualized
- No visible grid lines
- Optimal exposure factors
- Compensating filter recommended

Modified Axiolateral Hip (Clements-Nakayama Method)

What projection is this?

Evaluation Criteria Modified Axiolateral Hip (Clements-Nakayama Method)

- CR 30� to 40� mediolateral and 15� to 20� posteriorly from horizontal
- CR centered to femoral neck
- Entire femoral head, neck, and trochanters centered to IR
- Femoral head and neck in profile

Lateral (Mid & Proximal) Femur/Hip

What projection is this?

Evaluation Criteria Lateral (Mid & Proximal) Femur/Hip

- Proximal femur not superimposed
- True lateral

Mid & Distal Femur Routine

- AP
- Lateral

AP (Mid and Distal) Femur

What projection is this?

Evaluation Criteria AP (Mid and Distal) Femur

- Rotate leg 5� internally
- CR to midpoint of IR
- Knee joint included
- No rotation
- From knee joint up as high as you can get on IR.

Lateral (Mid and Distal) Femur

What projection is this?

Evaluation Criteria Lateral (Mid and Distal) Femur

- True lateral
- Mediolateral
- CR to midpoint of IR
- Knee joint included (minimum)
- No rotation, knee will appear tilted, this is normal. That's why we angle on a lateral knee.
- Include knee joint up as high as will fit on the IR.

Trauma Lateral (Mid and Distal) Femur

What projection is this?