Mako THA Exam Questions and Answers 2023 with
complete solution
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
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
b. 10
T/F Sacral slope will always be an absolute value.
True
Define pelvic tilt:
The angle between the anterior pelvic plane (APP) and the coronal plane in the sagittal
view
How is sacral slope measured?
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.
True
Define posterior pelvic tilt:
APP angled posteriorly relative to coronal plane
Define anterior pelvic tilt:
APP angled anteriorly relative to coronal plane
T/F Sacral slope angle can be positive or negative.
False - it will always be positive.
Where can you choose to view the change in pelvic tilt values relative to the
supine pose?
Surgeon preferences
What mode is VROM used in?
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.
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.
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
e. All the above
What are the VROM recommended angles for STAND position?
10 degrees extension
30 degrees external rotation
No abduction/adduction
What are the VROM recommended angles for SIT position?
90 degrees flexion
60 degrees internal rotation
No abduction/adduction
List the 3 types of impingement:
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
A, C, D, F,
How is combined version calculated?
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
e. All of the above
complete solution
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
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
b. 10
T/F Sacral slope will always be an absolute value.
True
Define pelvic tilt:
The angle between the anterior pelvic plane (APP) and the coronal plane in the sagittal
view
How is sacral slope measured?
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.
True
Define posterior pelvic tilt:
APP angled posteriorly relative to coronal plane
Define anterior pelvic tilt:
APP angled anteriorly relative to coronal plane
T/F Sacral slope angle can be positive or negative.
False - it will always be positive.
Where can you choose to view the change in pelvic tilt values relative to the
supine pose?
Surgeon preferences
What mode is VROM used in?
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.
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.
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
e. All the above
What are the VROM recommended angles for STAND position?
10 degrees extension
30 degrees external rotation
No abduction/adduction
What are the VROM recommended angles for SIT position?
90 degrees flexion
60 degrees internal rotation
No abduction/adduction
List the 3 types of impingement:
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
A, C, D, F,
How is combined version calculated?
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
e. All of the above
