smith&nephew RT-PLUS Surgical Technique page 8

The minimum effective PE thickness in the load zone is 8 mm. The selected manufacturing
method, the design (condyles) and the high-quality material combine to form the proven wear-
resistance of the insert.
The tibial inserts are identical to those in the RT-PLUS™ portfolio.
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Patellar component
The all-poly (UHMW polyethylene) patellar
component has a symmetrical biconcave
surface for better tracking.
Tibial insert
The simple and securely anchored tibial insert
is manufactured from UHMW polyethylene and
is available in three different heights of 8 mm,
11 mm and 14 mm, in order to restore the joint
height independent to the degree of tibial
bone substance loss.
The special design of the polyethylene insert
enables an easy coupling of the prosthesis,
for which only minimal distraction is required.
Tibial component
The symmetrical tibial component is manu-
factured from CoCrMo alloy.
In order to prevent polyethylene wear inside
the tibial component, the base plate is pol ished
on the inside and the insert is com pletely en-
closed along its entire circumference.
A modular stem connection allows the use of
different stems, which serve to stabilize the
tibial component.
To compensate tibial bone defects, proximal
tibial blocks can be fi xed on the tibial compo-
nent.
The tibial component is available in sizes 2,
4, 6, 8 and 10.