TKA 2.0 Study Notes Quiz

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Questions and Answers

What error will occur if the spread metric used to calculate 'Hip Center' fails more than once?

The pelvic array is used for intra-incisional tibia bone pin placement

The femoral array drops out of camera view

The spread metric used to calculate 'Hip Center' fails more than once (correct)

The spread metric used to calculate 'Hip Center' fails once

Which laxity value will be saved when the user captures the example by pressing the foot pedal or selecting the 'Capture' button?

-4.0

-2.0 mm (correct)

1.5

-25

Is it true that the user must lock the preferred plan before navigating to certain pages?

Only in certain conditions

It doesn't matter

False

True (correct)

What is the capturable flexion range for flexion laxity poses during the initial assessment?

85° to 105° Signup and view all the answers

What happens to the 'Trialing' pose captures when the poly size is changed in the software?

They are deleted due to changes in joint mechanics. Signup and view all the answers

Is pre-resection laxity calculated from the planned tibial resection to the planned femoral resection?

False Signup and view all the answers

Which statement is true regarding live 'Laxity Capture' during the Trialing phase?

The user is limited to live laxity capture only. Signup and view all the answers

What occurs when a user captures a 'Hip Center' and the spread metric fails more than once?

The captured 'Hip Center' remains unless the user deletes it. Signup and view all the answers

What do the laxity values displayed within TKA 2.0 represent?

The closest distance minus the thickness of the tibia component Signup and view all the answers

What warning is displayed if the user selects 'Continue' after a tibial patient landmark error?

A warning on the 'Bone Registration' page will be displayed. Signup and view all the answers

If the Mako System cuts deeper than the implant plan, what color will it be displayed in the Bone Preparation page?

Yellow Signup and view all the answers

What happens to the Extension Lateral Max value while capturing poses?

It decreases to 0.5mm. Signup and view all the answers

Which warning can be displayed on the 'Bone Preparation' page if triggered during Implant Planning?

Notching Signup and view all the answers

Which statement is incorrect regarding the user's ability to modify the implant plan during 'Trialing'?

The user can only view the implant plan without modifications. Signup and view all the answers

What checkpoint must the surgeon pass after finishing the tibial resection before proceeding to the posterior femur resection?

Femur checkpoint only Signup and view all the answers

What must be done if the tibial landmarks fail during the capture process?

The user can proceed but must handle a displayed warning. Signup and view all the answers

Why might the captured 'Hip Center' affect the accuracy of tibial bone registration?

It may introduce errors into the registration process. Signup and view all the answers

What does the 'To be cut' volume display as on the 'Bone Preparation' page?

Blue Signup and view all the answers

Which cutoff can the surgeon access if the straight saw attachment cutter checkpoint has passed, but the software is on the tibia dropdown?

Access to the anterior cut Signup and view all the answers

What combination of checkpoints must be passed for the distal femoral resection to occur after anterior chamfer resection?

Cutter checkpoint (angled saw attachment) only Signup and view all the answers

What happens if the implant plan triggers the 'checkpoint near cut' warning but it is not addressed?

The warning will appear on the 'Bone Preparation' page Signup and view all the answers

If the probe tip is within 100 mm of the tibial checkpoint, what result will the software display?

Red checkpoint result preventing access Signup and view all the answers

After passing the straight saw attachment cutter checkpoint, what should the surgeon ensure regarding their dropdown selection?

It should be set to 'Femur' Signup and view all the answers

Which checkpoints are required if the surgeon finishes the posterior resection and wants to make a femoral cut?

Femur checkpoint only Signup and view all the answers

What warning is applicable only during the tensioning phase related to the flexion pose?

tilt, flexion Signup and view all the answers

What is recommended while positioning the Mako System with Mako Park?

Holster the robotic arm Signup and view all the answers

What do positive laxity values represent in relation to the planned components?

Gap space between the planned components Signup and view all the answers

Which views will display the anatomic axis of the femur on the Implant Planning page if 'Display axes' is enabled?

Coronal and sagittal Signup and view all the answers

In the capturing process of the medial slope tibial landmark, what is the first step?

Place the crosshair on the center of the medial tibial plateau Signup and view all the answers

What will happen if the user selects the lateral malleolus on the tibia during CT landmark selection?

The associated CT landmark will be cleared automatically Signup and view all the answers

Where should the crosshair be positioned when selecting the proximal shaft CT landmark?

Below the lesser trochanter Signup and view all the answers

Which of the following describes the knee deformity if it is varus in extension and valgus in flexion?

Varus in extension, valgus in flexion Signup and view all the answers

What threshold must be exceeded regarding implant overhang on the anterior flange to trigger the 'Flange tip' warning?

1.00 mm Signup and view all the answers

Will the application allow a user to proceed to bone preparation if a 'true notching' warning is triggered?

No Signup and view all the answers

If a surgeon has executed a 7 mm tibial resection, what will trigger the 'Implant proud of cut' warning on the tibia?

0.01 mm Signup and view all the answers

Are warnings determined solely by the user's unique surgeon preferences?

No, they are standardized Signup and view all the answers

Which alignment method is NOT considered an individualized alignment?

Static alignment Signup and view all the answers

When converting a PKA 3.0 session file to a TKA 2.0 session file for a lateral uni-compartmental, what should the user ensure?

Ensure access to required bone registration regions Signup and view all the answers

Does the 'Mid-resection balancing' workflow enable the 'Joint balancing' page?

No, it enables tensioning Signup and view all the answers

What is the correct sequence for the user to change the 'constitutional alignment' value?

In implant planning, initial assessment, and trialing Signup and view all the answers

What workflows does TKA 2.0 offer?

'Pre-resection balancing' and 'Mid-resection balancing' Signup and view all the answers

Which angle is used to calculate the tibial value?

Medial Proximal Tibial Angle (MPTA) Signup and view all the answers

If the user selects 'M/L together (one pose) in extension, what must they also select?

M/L together (one pose) in flexion Signup and view all the answers

When intra-incisional tibia bone pin placement is chosen, how should the MICS handle be rotated?

90° medial, 90° lateral, or 45° lateral Signup and view all the answers

When should the surgeon remove the tibial bone pins and array?

Prior to stem drill / keel punch Signup and view all the answers

What consideration must be made if the user prefers intra-incisional bone pins on the tibia?

The clamp, array, and pins must be removed prior to stem drill/keel punch Signup and view all the answers

What placement guideline must be followed for the tibial checkpoint during intra-incisional bone pin placement?

Remains the same as TKA 1.0 guidance Signup and view all the answers

What notification will be triggered if a patient's constitutional alignment is set to 3° varus to 3° valgus, but the patient's measurement is 5.1 varus?

A notification for exceeding the varus limit will be triggered Signup and view all the answers

Study Notes

TKA 2.0 95 Questions Study Notes

Flexion Laxity Pose Deletion: Max Flexion Medial Laxity decreases to 5.5mm, Live Flexion Medial Laxity to 0mm, Max Flexion Lateral Laxity to 6.5mm, and Live Flexion Lateral Laxity to 2.5mm for the case of capture. All values on the screen reset to 0mm if not this case.
Proximal Shaft CT Landmark: Crosshair should be below the lesser trochanter when selecting.
Medial Slope Tibial Landmark: First step is to align the green arrows matching the patient's native slope, then place the crosshair on the center of the medial tibial plateau.
Distal Shaft CT Landmark: Located at the distal aspect of the femoral shaft.
Trialing Flexion Range: Depends on the Final Alignment sagittal flexion angle.
Zeroing During Trialing: Necessary if bone arrays are bumped or the user changes the poly size on the Trialing page after a surgeon change. Also zeroing is required if the user navigates to a laxity pose before all trials are in the joint.
Delete Button: Used to delete captured poses, or erase the maximum achieved value if Ratcheted preference is selected. Software deletes all Trialing pose captures when the poly size changes, as joint mechanics alter values.
Extension Lateral Laxity Pose: Max value will decrease to 0.5mm and live laxity to 0mm.
Hip Center Capture Error: Error pops up if the spread metric calculation fails more than once, and not accurately registering 'Hip Center.'
Bone Registration Error: When capturing tibia landmarks, a warning is displayed on the Bone Registration page for failed attempts.
Initial Assessment Flexion Range (Laxity Poses): 85° to 105° dependent on native sagittal deformity flexion angle to ensure capsule laxity during extension pose captures (not 85° to 95°).
Pre-resection Laxity Calculation: Determined from the planned tibial resection to femoral resection.
Calculated Laxity Values (TKA 2.0): Represents the closest distance between the planned resection for both tibia and femur, minus the thickness of the component.
Implant Display Errors: If the Mako System cuts deep to the implant plan, it will display in red on the Bone Preparation page.
Checkpoint Warnings (Bone Preparation): Yellow warnings appear on the main window bone model if an implant plan has triggered a checkpoint near a cut. Warnings are determined by surgeon preference; they are displayed if the implant plan has triggered a checkpoint interaction.
Warning Triggered Actions: The application won't move the user on to bone preparation if the following warnings are triggered: overhang, changes after resection, flange tip, and implant proud of cut.
Overhang Warning: Triggered when the implant overhang exceeds a threshold; the threshold is 1.00mm for tibia and 2.70mm for the Anterior Flange.
Checkpoint Requirements: Surgeons may need to pass a Femur checkpoint only or cutter checkpoints if they want to go to the next step of the procedure.
To Be Cut Volume Color: Shown as blue in Bone Preparations page..
Intraoperative Warnings: Notching, Combined implant flexion, and Overhang can be triggered intra-operatively; 'Implant proud of cut' and 'Checkpoint near cut' are triggered intraoperatively.
Implant Size and Max Flexion: If a size 3 femur and 3 tibia plan with a 3 degree posterior slope, the maximum flexion is 7° combined (10° if tibia size is equal to or greater than femur, 8 if femur is bigger than tibia). If the user plan is 5 Femur and 4 Tibia with 0 degree slope, max flexion in the femoral component is 7 degrees.

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Description

Test your knowledge with 95 questions focused on TKA 2.0 study notes. This quiz covers critical concepts such as flexion laxity, CT landmarks, and trialing flexion range. Perfect for students and professionals involved in orthopedic practices.