Mako Tka Study Guide Exam Questions and
CORRECT Answers
Coronal plane - CORRECT ANSWER - Varus/valgus in relation to mechanical axis
Transverse plane - CORRECT ANSWER - Internal/external rotation in relation to TEA
Sagittal plane - CORRECT ANSWER - Flexion/extension
Femur: default alignment in coronal plane - CORRECT ANSWER - 0 degrees
varus/valgus
Femur: default alignment in transverse plane - CORRECT ANSWER - 0 degrees
internal/external with respect to TEA
Femur: default alignment in sagittal plane - CORRECT ANSWER - 4 degrees of flexion
Tibia: default alignment in coronal plane - CORRECT ANSWER - 0 degrees varus/valgus
Tibia: default alignment in transverse plane - CORRECT ANSWER - 0 degrees
internal/external with respect to tibial A/P axis
Tibia: default alignment in sagittal plane - CORRECT ANSWER - 3-degree posterior
slope for PCL retaining; 0 - degree slope for posterior sacrificing
Varus Knee: medial tibia maximum - CORRECT ANSWER - maximum resection of 7mm
varus knee: lateral tibia default - CORRECT ANSWER - default resection of 7mm
,valgus knee: medial tibia default - CORRECT ANSWER - default resection of 5mm
varus knee: lateral tibia range - CORRECT ANSWER - range 5-9mm
valgus knee: medial tibia range - CORRECT ANSWER - range 3-7mm
distal and posterior medial femur default - CORRECT ANSWER - default resection of
8mm
distal and posterior lateral femur maximum - CORRECT ANSWER - maximum resection
of 8mm
distal and posterior medial femur range - CORRECT ANSWER - range 6-10mm
review runout of the anterior cut relative to anterior flange of component - CORRECT
ANSWER - coronal plane
note appropriate flexion of femur - CORRECT ANSWER - sagittal plane
confirm default tibial slope - CORRECT ANSWER - sagittal plane
assess size and fit of tibial component - CORRECT ANSWER - transverse plane
assess femoral implant trochlea - CORRECT ANSWER - transverse plane
scroll through CT slices to assess femoral component M/L width to avoid overhang - CORRECT
ANSWER - transverse plane
, confirm starting alignment - CORRECT ANSWER - coronal plane
confirm default tibial plateau resection - CORRECT ANSWER - coronal plane
confirm the implant does not overstuff the patellofemoral compartment - CORRECT
ANSWER - transverse plane
confirm femoral components medial condyle is concentric with native condyle - CORRECT
ANSWER - sagittal plane
confirm femoral component size - CORRECT ANSWER - sagittal plane
confirm default 8 mm resection on distal medial femoral condyle - CORRECT ANSWER -
coronal plane
scroll through CT slices to ensure anterior flange is not proud of native sulucs - CORRECT
ANSWER - sagittal plane
note femoral rotation with respect to TEA and PCA - CORRECT ANSWER - transverse
plane
confirm default 8 mm resection on posterior medial femoral condyle - CORRECT
ANSWER - transverse plane
Tibia: alignment range in coronal plane - CORRECT ANSWER - 2 degrees varus/valgus
Femur: alignment range in sagittal plane (tibia size less than femur size) - CORRECT
ANSWER - MAX 8 degrees combined tibiofemoral flexion
CORRECT Answers
Coronal plane - CORRECT ANSWER - Varus/valgus in relation to mechanical axis
Transverse plane - CORRECT ANSWER - Internal/external rotation in relation to TEA
Sagittal plane - CORRECT ANSWER - Flexion/extension
Femur: default alignment in coronal plane - CORRECT ANSWER - 0 degrees
varus/valgus
Femur: default alignment in transverse plane - CORRECT ANSWER - 0 degrees
internal/external with respect to TEA
Femur: default alignment in sagittal plane - CORRECT ANSWER - 4 degrees of flexion
Tibia: default alignment in coronal plane - CORRECT ANSWER - 0 degrees varus/valgus
Tibia: default alignment in transverse plane - CORRECT ANSWER - 0 degrees
internal/external with respect to tibial A/P axis
Tibia: default alignment in sagittal plane - CORRECT ANSWER - 3-degree posterior
slope for PCL retaining; 0 - degree slope for posterior sacrificing
Varus Knee: medial tibia maximum - CORRECT ANSWER - maximum resection of 7mm
varus knee: lateral tibia default - CORRECT ANSWER - default resection of 7mm
,valgus knee: medial tibia default - CORRECT ANSWER - default resection of 5mm
varus knee: lateral tibia range - CORRECT ANSWER - range 5-9mm
valgus knee: medial tibia range - CORRECT ANSWER - range 3-7mm
distal and posterior medial femur default - CORRECT ANSWER - default resection of
8mm
distal and posterior lateral femur maximum - CORRECT ANSWER - maximum resection
of 8mm
distal and posterior medial femur range - CORRECT ANSWER - range 6-10mm
review runout of the anterior cut relative to anterior flange of component - CORRECT
ANSWER - coronal plane
note appropriate flexion of femur - CORRECT ANSWER - sagittal plane
confirm default tibial slope - CORRECT ANSWER - sagittal plane
assess size and fit of tibial component - CORRECT ANSWER - transverse plane
assess femoral implant trochlea - CORRECT ANSWER - transverse plane
scroll through CT slices to assess femoral component M/L width to avoid overhang - CORRECT
ANSWER - transverse plane
, confirm starting alignment - CORRECT ANSWER - coronal plane
confirm default tibial plateau resection - CORRECT ANSWER - coronal plane
confirm the implant does not overstuff the patellofemoral compartment - CORRECT
ANSWER - transverse plane
confirm femoral components medial condyle is concentric with native condyle - CORRECT
ANSWER - sagittal plane
confirm femoral component size - CORRECT ANSWER - sagittal plane
confirm default 8 mm resection on distal medial femoral condyle - CORRECT ANSWER -
coronal plane
scroll through CT slices to ensure anterior flange is not proud of native sulucs - CORRECT
ANSWER - sagittal plane
note femoral rotation with respect to TEA and PCA - CORRECT ANSWER - transverse
plane
confirm default 8 mm resection on posterior medial femoral condyle - CORRECT
ANSWER - transverse plane
Tibia: alignment range in coronal plane - CORRECT ANSWER - 2 degrees varus/valgus
Femur: alignment range in sagittal plane (tibia size less than femur size) - CORRECT
ANSWER - MAX 8 degrees combined tibiofemoral flexion
