Mako PKA Exam SCRIPT 2026/2027 WITH
EXPERT-VERIFIED ANSWERS RATED A+
• How should initial posterior slope be positioned? -✓✓ set crosshair in sagital view to
mid-point of the tibia and drop the crosshair slope 1-2 degrees below the native
anatomic slope
• what is the difference between pka and tka? -✓✓ PKA is not a joint replacement
procedure it is a joint resurfacing procedure
• How is adjusting implant proudness? -✓✓ Moves the implant perpendicular to the
posterior slope
• Pre-planning guidelines for proudness? -✓✓ 2.5-3.5 mm
• Resection depth for tibia? -✓✓ Poly size- proudness= resection depth for of the tibia
• How to size tibial implant? -✓✓ Go to transverse view and move tibia implant to correct
location and toggle different sizes to determine best fit
• How to determine correct tibia size? -✓✓ No overhang A/P or M/L and does not
intrube the tibial intercondylar eminence (location of the ACL insertion)
• recommended pre-operative planning for tibia IR/ER -✓✓ IR/ER is 5 internal-5 external
• in coronal view what are preoperative parameters for varus/valgus? -✓✓ 0-1.5 varus
*want the implant to match the native curvature in the anterior and posterior portions
• medial femur implant sizing -✓✓ 1) drag the implant to match the native condyle in the
center of the medial femoral condyle
2) in the sagital view drag the femoral component to match the curvature of the native
condyle
• femoral preoperative IR/ER -✓✓ 5 internal- 5 external
• femoral varus/valgus -✓✓ 3 varus- 3 valgus
• what is the FFC? -✓✓ Flexion Facet Center-- tip of the crosshair is placed on FFC
right above the posterior nub of the implant because the J curve is different
• PF preoperative planning -✓✓ -ensure that the implant is less than 2mm inset from the
medial and lateral ridges
-superior lateral tip=> ensure the magenta bone line bisects the tip of the implant
EXPERT-VERIFIED ANSWERS RATED A+
• How should initial posterior slope be positioned? -✓✓ set crosshair in sagital view to
mid-point of the tibia and drop the crosshair slope 1-2 degrees below the native
anatomic slope
• what is the difference between pka and tka? -✓✓ PKA is not a joint replacement
procedure it is a joint resurfacing procedure
• How is adjusting implant proudness? -✓✓ Moves the implant perpendicular to the
posterior slope
• Pre-planning guidelines for proudness? -✓✓ 2.5-3.5 mm
• Resection depth for tibia? -✓✓ Poly size- proudness= resection depth for of the tibia
• How to size tibial implant? -✓✓ Go to transverse view and move tibia implant to correct
location and toggle different sizes to determine best fit
• How to determine correct tibia size? -✓✓ No overhang A/P or M/L and does not
intrube the tibial intercondylar eminence (location of the ACL insertion)
• recommended pre-operative planning for tibia IR/ER -✓✓ IR/ER is 5 internal-5 external
• in coronal view what are preoperative parameters for varus/valgus? -✓✓ 0-1.5 varus
*want the implant to match the native curvature in the anterior and posterior portions
• medial femur implant sizing -✓✓ 1) drag the implant to match the native condyle in the
center of the medial femoral condyle
2) in the sagital view drag the femoral component to match the curvature of the native
condyle
• femoral preoperative IR/ER -✓✓ 5 internal- 5 external
• femoral varus/valgus -✓✓ 3 varus- 3 valgus
• what is the FFC? -✓✓ Flexion Facet Center-- tip of the crosshair is placed on FFC
right above the posterior nub of the implant because the J curve is different
• PF preoperative planning -✓✓ -ensure that the implant is less than 2mm inset from the
medial and lateral ridges
-superior lateral tip=> ensure the magenta bone line bisects the tip of the implant
