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Tibial insert
The simple anchored tibial insert is
manufactured from UHMW polyethylene and
in order to restore the joint line,
independently to the degree of tibial bone
loss, three different heights (8, 11 and 14 mm)
of tibial inserts are available.
Important
The tibial components thickness of 3mm
need to be added to the tibial insert height of
8mm resulting in a total tibial height of 11mm,
14mm for a tibial insert of 11mm and 17mm for
a tibial insert of 14mm, respectively.
The minimum effective PE thickness in the
load zone is 8mm.
The special anchorage design of the
polyethylene insert and method to place into
the tibial component, enables an easy
coupling of the prosthesis, for which only
minimal distraction is required.
While the tibial insert is in place, it is
additionally secured by a clamp that is
locked with a PE pin.
The tibial inserts are identical to those in the
RT-PLUS™ Modular portfolio.
Tibial component
The symmetrical tibial component is
manufactured from CoCrMo alloy. In order to
minimize polyethylene wear inside the tibial
component, the base plate is polished on
the inside and the insert is completely
enclosed along its entire circumference.
To improve flexion, the tibial component is
designed with 3° posterior slope and need
therefore to be aligned in rotation.
The slender tapered femoral and tibial stems
allows a stable anchorage, even when the
medullary cavity is restricted.
The tibial component is available in sizes 2,
4, 6, 8, and 10.
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