Frequently Tested Questions With Elaborated 100% Correct Complete Solutions
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How many CT scans will a Mako Total Knee patient receive? 1
How should a Mako patient be positioned in the CT scan-
Supine, feet first
ner?
Hip
Which regions must be present in a Mako Total Knee CT
Knee
scan?
Ankle
Why are the metal components in the joint potentially Metal components in the joint will cause scatter in the CT
problematic for a Mako Total Knee CT scan? scan making it diflcult to segment
A motion check is required when uploading a Mako Total
True
Knee scan.
Mako Total Knee CT scan protocol requires three individual
False
scans.
A patient received their CT scan for their Mako Total Knee
The patient's anatomy/deformity could change if the scan
10 weeks prior to their surgery date. Why could this be
is older than 8 weeks
problematic?
Metal components in the joint will cause scatter in the CT
True
scan making it diflcult to segment
The motion rod must be placed laterally during the CT
False
scan
The earliest time before a Mako Total Knee procedure that
a patient can be scanned is eight weeks. Why is it not The patient's anatomy could change as their arthritis pro-
acceptable to use a Mako Total Knee CT scan older than gresses
eight weeks?
It is acceptable to use a CT scan that fails a motion check
False
for a Mako Total Knee case
The correct scanning procedure requires one scan for the
True
individual hip, knee, and ankle regions.
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The purpose of CT segmentation is to produce an accurate
True
CT-based 3D bone model of the patient's anatomy.
Attached osteophytes should not be included in the seg-
True
mentation live wire.
What bone(s) must be segmented to create the full Femur
CT-based bone model for a Mako Total Knee case? Tibia
The distal segmentation bound of the tibia should ensure
The tibial tubercle
that the is part of the CT segmented bone model
What should be considered when setting the femoral The femoral segmentation bounds should be rotated to
segmentation bounds? be parallel with Whiteside's line
During CT segmentation, how many slices does 'Setting
40
Slices' generate on the tibia?
During CT segmentation, how many slices does 'Setting The number of slices generated is variable depending on
Slices' generate on the femur? the size of the patient's femur
The tibial tubercle should be included in the CT segment-
True
ed bone model.
The femoral segmentation bounds should be rotated to
Whiteside's line
be parallel with .
During segmentation, 'Setting Slices' on the femur always
False
generates 90 slices.
How do you define the inferior/distal boundary on the Drag the inferior/distal boundary inferior/distal and cap-
tibia during segmentation? ture the tibia tuberosity
During segmentation, 'setting slices' on the tibia gener-
40
ates how many slices?
The CT landmarks are required for .
- No mentioned answer choices
No mentioned answer choices
- All mentioned answer choices
- Probe check
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- Segmentation
- Mako registration
- CT load
Hip center to femur knee center establishes which coor-
Femur mechanical axis
dinate axis?
The application will display the medial and lateral slope
False
values within the 'Implant Planning' page.
Which axis runs perpendicular to the femur M/L axis? Femur A/P axis
Proximal and distal shaft CT landmarks impact the femoral
False
coordinate system.
Tibia knee center to ankle center establishes which coor-
Tibia mechanical axis
dinate axis?
The anatomic axis of the femur can be displayed in which
view(s) on the 'Implant Planning' page if the Coronal, sagittal, and transverse
preference is selected and 'Display axes' is enabled?
Which axis does the rotational landmark define (center of
Tibia A/P axis
the PCL insertion to medial 1/3 of the tibial tubercle)?
Which CT landmark(s) define(s) the surgical transepi-
Medial epicondyle and lateral epicondyle
condylar axis (sTEA)?
While positioning the proximal shaft CT landmark below
the lesser trochanter, the crosshair should be centered in True
all three views (transverse, coronal, sagittal).
What is the location of the proximal shaft CT landmark? Proximal aspect of the femoral shaft
What is the first step of capturing the medial slope tibial Place the crosshair on the center of the medial tibial
landmark? plateau
Appropriate placement of the tibia resection landmarks
The low point/sulcus of the insert
considers which of the following?
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The femoral resection landmarks are defined by the hip
center, proximal shaft, femur knee center, distal shaft, me- False
dial epicondyle and lateral epicondyle.
Medial Proximal Tibial Angle (MPTA), Constitutional Land-
The value is calculate using tibial .
marks, determined by the patch landmark methodology
Proximal shaft and distal shaft landmarks do not influence
the femur coordinate system or computation of femoral True
'Resection Landmarks.'
The value is calculated using the 'Femur Distal Medial'
Lateral Distal Femoral Angle (LDFA), Constitutional
and 'Femur Distal Lateral Landmarks.
What is defined by the line connecting the posterior femur
Posterior condylar axis (PCA)
landmarks?
Points coronally aligned with a location 2/3 posterior on
Tibia resection landmarks are defined as
the proximal lateral plateau
When positioning the distal and posterior femur resection
landmarks, the landmarks should be positioned on the False
outer edges of the condyle.
In general, 2/3 posterior from the anterior tibia on the
Regarding the default location of the tibial 'Resection
medial/lateral tibial plateau and not on the tibial emi-
Landmarks, points should be ."
nence
Constitutional landmarks are NOT editable. True
The software default location of the tibial resection land-
marks is approximately 2/3 posterior from the anterior True
tibia, referencing the lateral tibial plateau.
The femoral resection landmarks are defined by the hip
center, femur knee center, medial epicondyle and lateral True
epicondyle.
Resection landmarks are editable. True
The femur resection landmarks should be positioned ___