Pelvis, Hip, SI Jts, Femur Flashcards
In the image below, which anatomical structure is identified by the #19:
a. ASIS
b. AIIS
c. greater sciatic notch
d. iliac crest
e. ischial spine
c. femoral necks on end??
An optimal AP pelvis projection demonstrates all of the following except:
a. greater trochanter are foreshortened.
b. lesser trochanters superimposed by the femoral neck.
c. a symmetrically appearing obturator foramen.
d. the sacrum and coccyx aligned with the symphysis pubis.
a. greater trochanter are foreshortened.
An AP pelvis projection obtained with the patient rotated toward the left hip demonstrates:
1. the symphysis pubis rotated toward the left hip.
2. a narrower right iliac wing.
3. a narrower left obturator foramen.
4. the sacrum and coccyx rotated toward the right hip.
1, 2, 3, and 4
An AP hip projection with accurate positioning demonstrates the:
1. lesser trochanter in profile.
2. greater trochanter in profile.
3. femoral neck without foreshortening.
4. sacrum rotated toward the affected hip.
2 and 3 only
A left AP hip projection of a patient who was rotated toward the right side (away from the affected side) demonstrates:
1. a narrowed left obturator foramen.
2. the sacrum and coccyx rotated toward the left hip.
3. a narrowed right obturator foramen.
4. the lesser trochanter in profile.
2 & 3 only
A less than optimal AP hip projection demonstrating the lesser trochanter in profile:
a. was obtained with the leg in internal rotation.
b. will also demonstrate the greater trochanter in profile.
c.will also demonstrate the greater trochanter at the same level as the femoral head.
d. will also demonstrate a foreshortened femoral neck.
d. will also demonstrate a foreshortened femoral neck.
For a lateral hip projection the:
1. lesser trochanter is demonstrated in profile medially.
2. femoral neck is superimposed over the greater trochanter.
3. ischial spine is demonstrated with pelvic brim superimposition.
4. greater trochanter is partially foreshortened.
1, 2, 3, and 4
A lateral hip projection obtained with the leg abducted (greater than 45 degrees) almost to the imaging table demonstrates the greater trochanter:
a. in profile laterally.
b. in the same transverse plane as the lesser trochanter.
c. midway between the femoral head and femoral neck.
d. in the same transverse plane as the femoral head.
d. in the same transverse plane as the femoral head
A lateral hip obtained with the knee and hip flexed more than 60 to 70 degrees with the imaging table demonstrates which of the following:
a. the greater trochanter medially.
b. the lesser trochanter medially.
c. the greater trochanter laterally.
d. the greater trochanter superimposed over the femoral head.
a. the greater trochanter medially.
An AP axial sacral iliac joint projection with accurate positioning demonstrates all of the following except:
a. median sacral crest and symphysis pubis in alignment.
b. symphysis pubis superimposed over the inferior sacral segments.
c. sacrum is slightly foreshortened.
d. sacroiliac joints without foreshortening.
c. sacrum is slightly foreshortened.
An AP axial projection of the sacroiliac joints taken with too much of a cephalic central ray angulationwill:
a. demonstrate sacroiliac joint foreshortening.
b. median sacral crest would be aligned to the right of the pubis.
c. demonstrate the inferior sacrum without symphysis pubis superimposition.
d. demonstrate sacroiliac joint elongation.
d. demonstrate sacroiliac joint elongation.
An AP oblique sacroiliac joint projection (RPO position) with poor positioning demonstrates a closed sacroiliac joint, the superior and inferior sacral alae without superimposition, and the lateral sacral ala superimposed over the iliac tuberosity. How was the positioning setup mispositioned for such a projection to be obtained?
a. The central ray was centered too medially.
b. The central ray was not angled.
c. The pelvis was overrotated.
d. The pelvis was insufficiently rotated.
d. The pelvis was insufficiently rotated.
An AP proximal femur projection with the patient rolled away from the affected side will demonstrate which of the following:
1. pelvic brim and ischial spine closer to the acetabulum
2. pelvic brim and ischial spine are in alingnment
3. obturator foramen is more open
4. obturator foramen is more closed
1 and 3 only
Please select the positioning error evident on the proximal lateral femur radiograph below:
a. anatomy of interest is not centered
b. patient is underrotated
c. anatomy of interest was clipped
d. patient is overrotated
b. patient is underrotated
