MAKO PKA TEST PAPER QUESTIONS AND ANSWERS
GRADED A+
✔✔medial tibia var/val - ✔✔0 - 1.5 degrees varus
(coronal view)
✔✔medial femur sizing constraints - ✔✔1 up 1 down
✔✔medial femur flex/ext - ✔✔5 degrees flexion - 5 degrees extension
(sagittal view)
✔✔T/F PKA allows for multiple plans saved in software - ✔✔true
✔✔medial femur positioning - ✔✔lateralize w/o intruding in notch
✔✔medial femur int/ext - ✔✔5 degrees internal - 5 degrees external
(transverse view)
✔✔medial femur var/val - ✔✔3 degrees valgus -3 degrees varus
(coronal view)
✔✔medial femur flex/ext goal - ✔✔1mm proud of bone
(use crosshair to measure)
✔✔inner and outer diameter of crosshair - ✔✔outer = 4mm
inner = 2mm (inner ring should touch outer edge of implant)
✔✔Flexion Facet Center(FFC) - ✔✔center of rotation for posterior circles
✔✔what type of design is PKA - ✔✔J-curve
✔✔max tip distance value - ✔✔anterior tip of articular surface to bone surface
-found in info box
-keep under 2mm
-set slightly inset to cartilage
✔✔PF planning steps - ✔✔1. medial/lateral fit
2. superior lateral tip
3. trochlear groove
4. blumensaats line
5. superior medial tip
6. transitions zones
7. femoral anterior tip (bicomp only)
, ✔✔Blumensaat's Line - ✔✔radiographic landmark representing the roof of intercondylar
notch
✔✔T/F you should NEVER externally rotate a PF component - ✔✔true
✔✔minimum amount of bone left on patella after resection - ✔✔12mm
✔✔PF medial/lateral fit goal - ✔✔2mm from ridges
✔✔PF superior lateral fit goal - ✔✔magenta line should bisect tip of implant
✔✔PF trochlear groove fit goal - ✔✔~2mm proud of bone through deepest part of the
groove
✔✔transition zones - ✔✔PF wings 2mm proud in coronal plane
✔✔PF flex/ext - ✔✔5 flexion - 5 extension
✔✔PF int/ext - ✔✔0 external - 4 internal
✔✔PF var/val - ✔✔2 valgus - 3 varus
✔✔T/F lateral tibia component sizes 1-2 are smaller than medial tibia sizes 1-2 - ✔✔true
✔✔Lateral tibia P. slope - ✔✔0 - 7 degrees
(match native slope than dial back 2 degrees)
✔✔lateral tibia proudness recommendation - ✔✔2.5 - 3.5 proud
✔✔lateral tibia int/ext - ✔✔10 internal - 5 external
✔✔lateral tibia var/val - ✔✔0 - 1.5 valgus
✔✔lateral femur sizing goal - ✔✔component should not extend beyond lateral meniscal
notch
✔✔lateral femur flex/ext - ✔✔5 flexion - 5 extension
✔✔lateral femur int/ext - ✔✔5 internal - 5 external
✔✔lateral femur var/val - ✔✔3 varus - 3 valgus
✔✔T/F max tip distance for lateral femur SHOULD equal a negative number - ✔✔false
GRADED A+
✔✔medial tibia var/val - ✔✔0 - 1.5 degrees varus
(coronal view)
✔✔medial femur sizing constraints - ✔✔1 up 1 down
✔✔medial femur flex/ext - ✔✔5 degrees flexion - 5 degrees extension
(sagittal view)
✔✔T/F PKA allows for multiple plans saved in software - ✔✔true
✔✔medial femur positioning - ✔✔lateralize w/o intruding in notch
✔✔medial femur int/ext - ✔✔5 degrees internal - 5 degrees external
(transverse view)
✔✔medial femur var/val - ✔✔3 degrees valgus -3 degrees varus
(coronal view)
✔✔medial femur flex/ext goal - ✔✔1mm proud of bone
(use crosshair to measure)
✔✔inner and outer diameter of crosshair - ✔✔outer = 4mm
inner = 2mm (inner ring should touch outer edge of implant)
✔✔Flexion Facet Center(FFC) - ✔✔center of rotation for posterior circles
✔✔what type of design is PKA - ✔✔J-curve
✔✔max tip distance value - ✔✔anterior tip of articular surface to bone surface
-found in info box
-keep under 2mm
-set slightly inset to cartilage
✔✔PF planning steps - ✔✔1. medial/lateral fit
2. superior lateral tip
3. trochlear groove
4. blumensaats line
5. superior medial tip
6. transitions zones
7. femoral anterior tip (bicomp only)
, ✔✔Blumensaat's Line - ✔✔radiographic landmark representing the roof of intercondylar
notch
✔✔T/F you should NEVER externally rotate a PF component - ✔✔true
✔✔minimum amount of bone left on patella after resection - ✔✔12mm
✔✔PF medial/lateral fit goal - ✔✔2mm from ridges
✔✔PF superior lateral fit goal - ✔✔magenta line should bisect tip of implant
✔✔PF trochlear groove fit goal - ✔✔~2mm proud of bone through deepest part of the
groove
✔✔transition zones - ✔✔PF wings 2mm proud in coronal plane
✔✔PF flex/ext - ✔✔5 flexion - 5 extension
✔✔PF int/ext - ✔✔0 external - 4 internal
✔✔PF var/val - ✔✔2 valgus - 3 varus
✔✔T/F lateral tibia component sizes 1-2 are smaller than medial tibia sizes 1-2 - ✔✔true
✔✔Lateral tibia P. slope - ✔✔0 - 7 degrees
(match native slope than dial back 2 degrees)
✔✔lateral tibia proudness recommendation - ✔✔2.5 - 3.5 proud
✔✔lateral tibia int/ext - ✔✔10 internal - 5 external
✔✔lateral tibia var/val - ✔✔0 - 1.5 valgus
✔✔lateral femur sizing goal - ✔✔component should not extend beyond lateral meniscal
notch
✔✔lateral femur flex/ext - ✔✔5 flexion - 5 extension
✔✔lateral femur int/ext - ✔✔5 internal - 5 external
✔✔lateral femur var/val - ✔✔3 varus - 3 valgus
✔✔T/F max tip distance for lateral femur SHOULD equal a negative number - ✔✔false
