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5. TIBIAL RESECTION
Calipered kinematic alignment sets the tibial component
parallel to the flexion-extension axis of the native knee and
coincident with the plane of the native tibia, which means
restoring the varus-valgus and the slope, after compensating
for cartilage and bone wear.
5.1 MARK THE A/P AXIS ON THE TIBIA
On the lateral tibial condyle, mark the anterior-posterior axis
(blue line) of the almost elliptically-shaped boundary of the
articular surface (black dots).
Mark also the anterior-posterior axis that passes through
the center of the tibia and parallel to the A/P axis of the
lateral compartment.
This will be the reference to adjust the rotation of the tibial
cutting block.
22.
5.2 ASSEMBLING THE EXTRAMEDULLARY GUIDE
The extramedullary guide consists of the following
components:
F
E
D
C
B
A
23.
Malleolar clamp (A)
Malleolar clamp support (B)
Tibial resection guide distal part (C)
Eyeballing extramedullary superior guide (D)
Tibial slotted cutting guide (E)
Tibial stylus (F)
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