Mako THA UPDATED Exam Questions
and CORRECT Answers
Functional hip positioning utilizes which feature(s) below:
a. Pelvic tilt planning
b. Virtual range of motion
c. Both a and b answers are correct
d. None of the answers are correct - CORRECT ANSWER- c. Both a and b answers are
correct
A pelvis is considered stiff if the rollback is less than ___ degrees.
a. 5
b. 10
c. 30
d. 40 - CORRECT ANSWER- b. 10
T/F Sacral slope will always be an absolute value. - CORRECT ANSWER- True
Define pelvic tilt: - CORRECT ANSWER- The angle between the anterior pelvic plane
(APP) and the coronal plane in the sagittal view
How is sacral slope measured? - CORRECT ANSWER- Using the angle between the
superior endplate of the S1 vertebrae and the horizontal plane.
T/F It can be assumed that as the pelvis rotates in sitting and standing, the sacrum and pelvis
move together. - CORRECT ANSWER- True
Define posterior pelvic tilt: - CORRECT ANSWER- APP angled posteriorly relative to
coronal plane
,Define anterior pelvic tilt: - CORRECT ANSWER- APP angled anteriorly relative to coronal
plane
T/F Sacral slope angle can be positive or negative. - CORRECT ANSWER- False - it will
always be positive.
Where can you choose to view the change in pelvic tilt values relative to the supine pose? -
CORRECT ANSWER- Surgeon preferences
What mode is VROM used in? - CORRECT ANSWER- Reduced mode in implant planning
T/F When there is overlap, or intersection, between the bone models or implant systems, the
application displays the impingement on the bone or implant in yellow. - CORRECT
ANSWER- False - red
When _______ is pressed, the femur, stem and head models disappear to provide a better
visualization of impingement. If ________ is pressed again, the femur, stem and head models
will reappear. - CORRECT ANSWER- ctrl + left-click
Modifications that can cause impingement include:
a. Changes in orientation, size, type of implants
b. Switching between functional poses
c. Updating ROM values for operative femoral model
d. Zooming in to see implant-on-implant impingement
e. All the above - CORRECT ANSWER- e. All the above
What are the VROM recommended angles for STAND position? - CORRECT ANSWER- 10
degrees extension
30 degrees external rotation
No abduction/adduction
What are the VROM recommended angles for SIT position? - CORRECT ANSWER- 90
degrees flexion
, 60 degrees internal rotation
No abduction/adduction
List the 3 types of impingement: - CORRECT ANSWER- Implant on implant
Bone on bone
Bone on implant
Which bony landmarks should be included in the lateral x-ray?
a. Bilateral ASIS
b. Epicondyles
c. Pubic tubercles
d. Lower lumbar spine
e. Malleoli
f. Sacrum
g. Lesser trochanters - CORRECT ANSWER- A, C, D, F,
How is combined version calculated? - CORRECT ANSWER- It's the cup version plus the
planned stem version.
Which of the following are reasons for the CT scan to be rejected by the segmentation team?
a. Incorrect slice thickness
b. Broken up scans
c. Missing regions
d. Clipped regions
e. All of the above - CORRECT ANSWER- e. All of the above
What is the correct position of the patient on the CT bed during the CT scan?
a. Supine position, headfirst
and CORRECT Answers
Functional hip positioning utilizes which feature(s) below:
a. Pelvic tilt planning
b. Virtual range of motion
c. Both a and b answers are correct
d. None of the answers are correct - CORRECT ANSWER- c. Both a and b answers are
correct
A pelvis is considered stiff if the rollback is less than ___ degrees.
a. 5
b. 10
c. 30
d. 40 - CORRECT ANSWER- b. 10
T/F Sacral slope will always be an absolute value. - CORRECT ANSWER- True
Define pelvic tilt: - CORRECT ANSWER- The angle between the anterior pelvic plane
(APP) and the coronal plane in the sagittal view
How is sacral slope measured? - CORRECT ANSWER- Using the angle between the
superior endplate of the S1 vertebrae and the horizontal plane.
T/F It can be assumed that as the pelvis rotates in sitting and standing, the sacrum and pelvis
move together. - CORRECT ANSWER- True
Define posterior pelvic tilt: - CORRECT ANSWER- APP angled posteriorly relative to
coronal plane
,Define anterior pelvic tilt: - CORRECT ANSWER- APP angled anteriorly relative to coronal
plane
T/F Sacral slope angle can be positive or negative. - CORRECT ANSWER- False - it will
always be positive.
Where can you choose to view the change in pelvic tilt values relative to the supine pose? -
CORRECT ANSWER- Surgeon preferences
What mode is VROM used in? - CORRECT ANSWER- Reduced mode in implant planning
T/F When there is overlap, or intersection, between the bone models or implant systems, the
application displays the impingement on the bone or implant in yellow. - CORRECT
ANSWER- False - red
When _______ is pressed, the femur, stem and head models disappear to provide a better
visualization of impingement. If ________ is pressed again, the femur, stem and head models
will reappear. - CORRECT ANSWER- ctrl + left-click
Modifications that can cause impingement include:
a. Changes in orientation, size, type of implants
b. Switching between functional poses
c. Updating ROM values for operative femoral model
d. Zooming in to see implant-on-implant impingement
e. All the above - CORRECT ANSWER- e. All the above
What are the VROM recommended angles for STAND position? - CORRECT ANSWER- 10
degrees extension
30 degrees external rotation
No abduction/adduction
What are the VROM recommended angles for SIT position? - CORRECT ANSWER- 90
degrees flexion
, 60 degrees internal rotation
No abduction/adduction
List the 3 types of impingement: - CORRECT ANSWER- Implant on implant
Bone on bone
Bone on implant
Which bony landmarks should be included in the lateral x-ray?
a. Bilateral ASIS
b. Epicondyles
c. Pubic tubercles
d. Lower lumbar spine
e. Malleoli
f. Sacrum
g. Lesser trochanters - CORRECT ANSWER- A, C, D, F,
How is combined version calculated? - CORRECT ANSWER- It's the cup version plus the
planned stem version.
Which of the following are reasons for the CT scan to be rejected by the segmentation team?
a. Incorrect slice thickness
b. Broken up scans
c. Missing regions
d. Clipped regions
e. All of the above - CORRECT ANSWER- e. All of the above
What is the correct position of the patient on the CT bed during the CT scan?
a. Supine position, headfirst
