Mako Final Exam 2023 Questions and Answers 100%
Verified
What does Bone registration do?
Identifies where the CT based model is located with respect to the arrays
What are the steps for bone registration?
1. Segmenting
2. CT Landmarks
3. Patient Landmarks
4. Collection of points
5. Verification
What are the 3 patient landmarks during bone registration?
1. Hip Center
2. Medial Mal
3. Lateral Mal
How many points on the tibia and femur?
40 Each
How many points are taken on a Partial Knee?
40 Each. Total 80
Hip Center, Medial Mal, Lateral Mal and 40 points (each) help do what?
Create best fit for CT layover
What does a green dot mean during bone registration?
Less than 0.5mm
What does a yellow dot mean?
.5-1.5mm
What does a red dot mean?
Greater than 1.5mm
When you have more than 3 or more yellow/red points what do you do?
Go in and investigate.
How to coach surgeon on bone registration?
Take 40 points in all 3 planes and make sure you are piercing cartilage
What does your overall accuracy need to be?
.5 or less
What do you do after 40 bone registration point?
Verify points on blue spheres
Do the blue verificaton spheres ever change position?
No they stay the same, there are 2 in each plane
What does distance to bone mean?
Actual distance from the bone on your CT model
What it passing for a verification sphere?
1mm
How is overall accuracy calculated?
Takes average of 40 points from CT model to patient's anatomy minus 4 outliers
What is the tibial tuberosity used for on tibia rotation verification?
To take 8 points at least 5mm apart
Verified
What does Bone registration do?
Identifies where the CT based model is located with respect to the arrays
What are the steps for bone registration?
1. Segmenting
2. CT Landmarks
3. Patient Landmarks
4. Collection of points
5. Verification
What are the 3 patient landmarks during bone registration?
1. Hip Center
2. Medial Mal
3. Lateral Mal
How many points on the tibia and femur?
40 Each
How many points are taken on a Partial Knee?
40 Each. Total 80
Hip Center, Medial Mal, Lateral Mal and 40 points (each) help do what?
Create best fit for CT layover
What does a green dot mean during bone registration?
Less than 0.5mm
What does a yellow dot mean?
.5-1.5mm
What does a red dot mean?
Greater than 1.5mm
When you have more than 3 or more yellow/red points what do you do?
Go in and investigate.
How to coach surgeon on bone registration?
Take 40 points in all 3 planes and make sure you are piercing cartilage
What does your overall accuracy need to be?
.5 or less
What do you do after 40 bone registration point?
Verify points on blue spheres
Do the blue verificaton spheres ever change position?
No they stay the same, there are 2 in each plane
What does distance to bone mean?
Actual distance from the bone on your CT model
What it passing for a verification sphere?
1mm
How is overall accuracy calculated?
Takes average of 40 points from CT model to patient's anatomy minus 4 outliers
What is the tibial tuberosity used for on tibia rotation verification?
To take 8 points at least 5mm apart
