Mako Test out Exam Questions and Answers 2023-2024
Actual Questions and Answers Complete
The knee has 3 articulations, which are?
Patellofemoral, tibiofemoral (medial, lateral compartment
What type of joint is the knee?
Synovial (also a "modified hinge joint")
The PF joint is what type of Joint
Plane joint
Axes of the knee?
Mechanical - center of femoral head to center of ankle
Anatomic - along the IM canals of the bone
Functional - Flexion/extension and longitudinal axis (rotation)
TEA -
Whiteside's - perpendicular from TEA (surgical)
As knee extends, Tibia externally rotates
What is always excuses during a TKA
ACL , menisci
Difference between medial and lateral plateaus?
4mm AP
Surgical TEA vs clinical TEA
Surgical -lateral prominence to medial sulcus
Clinical - prominence to prominence
What is the Q angle?
Angle between the axis of the femur (ASIS to patella) and the line between the patella
and tibial tuberosity extended
Which femoral ridge is extended more anterior?
Lateral, despite the medial condyle being typically larger
TKA design Rationale
- stability in Flexion
- less quad force in extension
- reduces patella stress
- important for activities where stability is needed
The Single Radius is designed to restore the knee's single center of rotation
during active flexion. This allows for constant _______ tension and ________ in
flexion.
Ligament / stability
Thickness of distal and posterior of femoral component
8mm each (to help make gaps as equal as possible)
Quads helps with
Stabilize the knee during gait
Less force requires because of the single radius (longer PF offset)
Shortened flared post. Consoles facilitate what?
Relaxation of soft tissue to enable deep flexion. (Also allows for int./Ext. Rotation up to
20°
Actual Questions and Answers Complete
The knee has 3 articulations, which are?
Patellofemoral, tibiofemoral (medial, lateral compartment
What type of joint is the knee?
Synovial (also a "modified hinge joint")
The PF joint is what type of Joint
Plane joint
Axes of the knee?
Mechanical - center of femoral head to center of ankle
Anatomic - along the IM canals of the bone
Functional - Flexion/extension and longitudinal axis (rotation)
TEA -
Whiteside's - perpendicular from TEA (surgical)
As knee extends, Tibia externally rotates
What is always excuses during a TKA
ACL , menisci
Difference between medial and lateral plateaus?
4mm AP
Surgical TEA vs clinical TEA
Surgical -lateral prominence to medial sulcus
Clinical - prominence to prominence
What is the Q angle?
Angle between the axis of the femur (ASIS to patella) and the line between the patella
and tibial tuberosity extended
Which femoral ridge is extended more anterior?
Lateral, despite the medial condyle being typically larger
TKA design Rationale
- stability in Flexion
- less quad force in extension
- reduces patella stress
- important for activities where stability is needed
The Single Radius is designed to restore the knee's single center of rotation
during active flexion. This allows for constant _______ tension and ________ in
flexion.
Ligament / stability
Thickness of distal and posterior of femoral component
8mm each (to help make gaps as equal as possible)
Quads helps with
Stabilize the knee during gait
Less force requires because of the single radius (longer PF offset)
Shortened flared post. Consoles facilitate what?
Relaxation of soft tissue to enable deep flexion. (Also allows for int./Ext. Rotation up to
20°
