TKA 2.0 Competency Exam
What data transfers from a PKA to TKA conversion? - answer Patient name + ID +
Operative Side
Screen captures
CT data
Segmentation
CT landmarks
What happen to surgeon preferences from a PKA to TKA conversion? - answer They
become default
What happens to CT landmarks new to 2.0 in a pka to tka conversion? - answer they
are left blank
When the segmentation is transferred from a pka to tka is it able to be edited? -
answerif originally planned in the sagital plane then yes
if orginially planned in the oblique plane then no
When you convert a pka to a tka why would there be warnings? - answerif the plan was
for a lateral uni or if you had already began resecting bone
Can you proceed from a pka to tka conversion if you get either one or both warnings? -
answeryes
What prefix is added to the newly formed tka file in a pka to tka conversion? -
answerP2T_
PKA to TKA conversion steps - answer1. Ensure pka on screen
2. Open tka application
3. Import pka session
4. Select pka session and hit 'ok'
5. Review info being carried over and hit 'continue'
6. Review box that says success and hit 'continue'
What are the two new ct landmarks? - answerProximal shaft and distal shaft
How is the proximal shaft captured? - answerJust below the lesser trochanter and then
placed in the center of the shaft in all three views
How is the distal shaft captured? - answerIt is captured a femur width above the femur
knee center and in the center of the shaft in all three views
, What value do the proximal shaft and distal shaft give you? - answerThe anatomical
axis
How can you view the anatomical axis? - answerby enabling it in surgeon preferences
and then in the implant planning page enabling 'display axes'
What are the new tibial ct landmarks and what is modified? - answerthe medial and
lateral slope are new and the rotational landmark is modified
How is the rotational landmark modified? - answerThe green axis is longer to better
visualize where you are aiming
How is the medial and lateral tibial slope found? - answerPlace the crosshair in the
middle of the tibial plateau and then adjust the arrow until it's parallel with the native
slope
What do the medial and lateral tibial slopes calculate and what are they used for? -
answerThey determined for the condylar slopes however they are not used to compute
implant planning axes
Where can you find the medial and lateral tibial slope info? - answerThey can be viewed
in 'mako case information' within the 'plan and anatomy tab'
When resection landmarks fail to populate what happens? - answerThe software
deletes the ct landmarks except the proximal and distal shaft
Do the proximal and distal shaft impact the femoral coordinating system? - answerNo
Can the user rely on a warning from the application if any CT landmarks were taken
incorrectly? - answerNo
What are the two modifications to the resection landmarks? - answerDefault location of
the proximal tibia resection landmarks
Introduction of constitution landmarks
What CT landmarks are used to compute the femoral resection landmarks? - answerHip
Center
Knee Center
Medial and Lateral epicondyle
What CT landmarks are used to compute the tibial resection landmarks? -
answerMedial and Lateral Mals
Rotational landmark
Tibia knee center
What data transfers from a PKA to TKA conversion? - answer Patient name + ID +
Operative Side
Screen captures
CT data
Segmentation
CT landmarks
What happen to surgeon preferences from a PKA to TKA conversion? - answer They
become default
What happens to CT landmarks new to 2.0 in a pka to tka conversion? - answer they
are left blank
When the segmentation is transferred from a pka to tka is it able to be edited? -
answerif originally planned in the sagital plane then yes
if orginially planned in the oblique plane then no
When you convert a pka to a tka why would there be warnings? - answerif the plan was
for a lateral uni or if you had already began resecting bone
Can you proceed from a pka to tka conversion if you get either one or both warnings? -
answeryes
What prefix is added to the newly formed tka file in a pka to tka conversion? -
answerP2T_
PKA to TKA conversion steps - answer1. Ensure pka on screen
2. Open tka application
3. Import pka session
4. Select pka session and hit 'ok'
5. Review info being carried over and hit 'continue'
6. Review box that says success and hit 'continue'
What are the two new ct landmarks? - answerProximal shaft and distal shaft
How is the proximal shaft captured? - answerJust below the lesser trochanter and then
placed in the center of the shaft in all three views
How is the distal shaft captured? - answerIt is captured a femur width above the femur
knee center and in the center of the shaft in all three views
, What value do the proximal shaft and distal shaft give you? - answerThe anatomical
axis
How can you view the anatomical axis? - answerby enabling it in surgeon preferences
and then in the implant planning page enabling 'display axes'
What are the new tibial ct landmarks and what is modified? - answerthe medial and
lateral slope are new and the rotational landmark is modified
How is the rotational landmark modified? - answerThe green axis is longer to better
visualize where you are aiming
How is the medial and lateral tibial slope found? - answerPlace the crosshair in the
middle of the tibial plateau and then adjust the arrow until it's parallel with the native
slope
What do the medial and lateral tibial slopes calculate and what are they used for? -
answerThey determined for the condylar slopes however they are not used to compute
implant planning axes
Where can you find the medial and lateral tibial slope info? - answerThey can be viewed
in 'mako case information' within the 'plan and anatomy tab'
When resection landmarks fail to populate what happens? - answerThe software
deletes the ct landmarks except the proximal and distal shaft
Do the proximal and distal shaft impact the femoral coordinating system? - answerNo
Can the user rely on a warning from the application if any CT landmarks were taken
incorrectly? - answerNo
What are the two modifications to the resection landmarks? - answerDefault location of
the proximal tibia resection landmarks
Introduction of constitution landmarks
What CT landmarks are used to compute the femoral resection landmarks? - answerHip
Center
Knee Center
Medial and Lateral epicondyle
What CT landmarks are used to compute the tibial resection landmarks? -
answerMedial and Lateral Mals
Rotational landmark
Tibia knee center
