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1. Hip length is defined as the:
A. Distance from the greater trochanter to the ASIS axis
B. Distance from the lesser trochanter to the ASIS axis
C. Distance from the femoral head center to the knee center
D. Distance from the pubic tubercle to the teardrop
{ANSWER: B. Distance from the lesser trochanter to the ASIS
axis}
2. Femoral version is defined as the angle between the:
A. S-TEA and the neck axis
B. Neck axis and the mechanical axis
C. Anatomic axis and the midline
D. S-TEA and the anterior pelvic plane
{ANSWER: A. S-TEA and the neck axis}
3. Pelvic tilt is the angle formed between the:
A. Endplate of S1 and the horizontal plane
B. Anterior pelvic plane (APP) and the coronal plane
C. Cup normal and the coronal plane
D. Neck axis and the S-TEA
{ANSWER: B. Anterior pelvic plane (APP) and the coronal plane}
4. Sacral slope is the angle between the:
A. APP and the coronal plane
B. Endplate of the S1 vertebra and the horizontal plane in the sagittal
view
C. Cup normal and the superior-inferior axis
D. Femoral neck axis and the horizontal plane in the transverse view
{ANSWER: B. Endplate of the S1 vertebra and the horizontal
plane in the sagittal view}
,5. What is the APP (anterior pelvic plane)?
A. A plane created from the operative and nonoperative pubic
tubercle and ASIS CT landmarks
B. A plane created from the femoral head centers and the S-TEA
C. A plane created from the cup rim
D. A plane created from the S1 endplate
{ANSWER: A. A plane created from the operative and
nonoperative pubic tubercle and ASIS CT landmarks}
6. The neck axis is composed of the:
A. Femoral head center and femoral neck center CT landmarks
B. Proximal canal and distal canal CT landmarks
C. Greater trochanter and lesser trochanter
D. Epicondyles
{ANSWER: A. Femoral head center and femoral neck center CT
landmarks}
7. Which two taxes calculate the native femoral version?
A. Mechanical axis and anatomic axis
B. S-TEA and femoral neck axis
C. Neck axis and midline
D. APP and S-TEA
{ANSWER: B. S-TEA and femoral neck axis}
8. Anteversion is:
A. Positive femoral version, with the neck axis rotated anteriorly in
relation to the S-TEA
B. Negative femoral version, with the neck axis rotated posteriorly in
relation to the S-TEA
C. The neck axis and S-TEA parallel in the transverse plane
D. A cup angle in the coronal plane
{ANSWER: A. Positive femoral version, with the neck axis
rotated anteriorly in relation to the S-TEA}
9. Neutral femoral version is when the:
A. Neck axis is rotated anteriorly to the S-TEA
B. Neck axis is rotated posteriorly to the S-TEA
, C. Neck axis and S-TEA are parallel in the transverse plane
D. Neck axis is perpendicular to the S-TEA
{ANSWER: C. Neck axis and S-TEA are parallel in the transverse
plane}
10. Retroversion is when the:
A. Neck axis is rotated posteriorly in relation to the S-TEA (negative
femoral version)
B. Neck axis is rotated anteriorly in relation to the S-TEA
C. Neck axis and S-TEA are parallel
D. Cup normal is rotated posteriorly
{ANSWER: A. Neck axis is rotated posteriorly in relation to the
S-TEA (negative femoral version)}
11. There are a total of ___ CT landmarks for the Mako total hip
application.
A. 17
B. 20
C. 27
D. 37
{ANSWER: C. 27}
12. How many CT landmarks are in the pelvis?
A. 7
B. 10
C. 14
D. 17
{ANSWER: B. 10}
13. How many CT landmarks are in the femur?
A. 10
B. 12
C. 17
D. 27
{ANSWER: C. 17}