pelvis

Question 1

• pt supine
• Medial rotate leg and feet 15 to 20 deg to place femoral necks parallel to IR, To avoid foreshortening
• Heels placed 8 to 10 inches apart
• Upper border of IR 1-1 ½ inches above iliac crest
• CR ⊥ midway between ASIS and symphysis pubis, 2” inferior to ASIS and 2” superior to symphysis pubis
• Greater trochanter in profile
• Femoral head and neck
• Provides general survey of the bones of the entire pelvis and proximal femur

Answer 1

AP Projection

Question 2

• Pt in lateral recumbent
• Pelvis in true lateral position
• CR ⊥ to level of soft tissue depression 2” above greater trochanter

Answer 2

Lateral Projection

Question 3

• Often called the bilateral frog leg position
• Non-Trauma
• Indication: congenital hip disease
• Contraindication: pt with suspected hip fx
• Pt in supine
• Abduct the thighs 45 deg from vertical
• CR: 40 deg cephalad to femoral shafted
• Axiolateral projection of the femoral heads and neck
• Lesser trochanter on medial side of femur
• Femoral neck without superimposition of greater trochanter

Answer 3

FEMORAL NECK AP OBLIQUE PROJECTION
ORIGINAL CLEAVES BILATERAL PROJECTION

Question 4

• Often called the bilateral frog leg position
• Non-Trauma
• Indication: congenital hip disease
• Contraindication: pt with suspected hip fx
• Pt in supine
• Abduct the thighs 45 deg from vertical
• CR ⊥ enter the patient’s MSP at the level 1 inch superior to symphysis pubis
• shows AP oblique projection of the femoral heads and neck
• Lesser trochanter on medial side of femur.
• Femoral neck without superimposition of the greater trochanter.

Answer 4

FEMORAL NECK AP OBLIQUE PROJECTION
MODIFIED CLEAVES BILATERAL PROJECTION

Question 5

Non-trauma Unilateral, perpendicular

Answer 5

Launstein

Question 6

Non-trauma Unilateral, 20-25 deg cephalad

Answer 6

Hickey

Question 7

Non-trauma Unilateral, 35 deg cephalad

Answer 7

Friedman

Question 8

• Trauma
• Unilateral
• The cross-table or surgical lateral projection of the hip joint
• Common projection for trauma, surgery, post-surgery or other patients who cannot move or rotate the affected leg for frog-leg lateral.
• Invert the leg 15-20 deg
• Unaffected side yung itataas
• CR: ⊥ to the femoral neck

Answer 8

AXIOLATERAL INFEROSUPERIOR PROJECTION
DANELIUS-MILLER METHOD

Question 9

• performed when both routine lateral and axiolateral are contra-indicated when a patient has bilateral hip arthroplasty.
• Usually performed when patient has limited movement in both lower limbs
• Alternative Danelius-Miller method.
• Both legs fully extended and in anatomical position
• CR: 15 to 20 deg posteriorly and ⊥ to the femoral neck
• IR: tilted 15 deg posterior angle from the vertical and 2 inches below tabletop

Answer 9

MODIFIED AXIOLATERAL PROJECTION
CLEMENTS-NAKAYAMA MODIFICATION

Question 10

• The reverse Danelius Miller method.
• Bilateral
• Rotate foot 15 to 20 degrees internally
• Place cassette (special curve) in vertical position well up between thigh & center it to crease of the groin of affected side

Answer 10

LEONARD – GEORGE METHOD

Question 11

• oblique plane defined by the brim of the pelvis.
• Also known as the INLET of the true pelvis.

Answer 11

Superior aperture

Question 12

• Defined by the two ischial tuberosities in the tip of the coccyx.
• Also known as the OUTLET of the true pelvis

Answer 12

Inferior aperture

Question 13

• Best demonstrate Gull-Wing sign in cases of fracture dislocation of the acetabular rim and posterior dislocation of the femoral head

Answer 13

DORSAL DECUBITUS LATERAL PROJECTION