63 |
NexGen MIS LPS-Flex Mobile Implant System
Surgical Technique
Tibial Articular Surface Implantation
Knee in 70°-90° flexion.
When the appropriately-sized
tibial, femoral and patellar implant components have
been implanted, allow the bone cement to cure.
The articular surface provisional may be inserted to
perform another trial reduction to confirm the articular
surface thickness. When the desired articular surface
has been determined, the articular surface implant
may be inserted.
With the knee in approximately 90° of flexion, place
the articular surface Implant against the distal portion
of the femoral component with the spine of the
articular surface fitting into the intercondylar notch
of the femoral component. The distal condyles of the
femoral component will be in contact with the articular
surface (Figure 14c).
Next, bring the tibia into extension while the articular
surface is held in place against the femoral component.
Axial rotation and distraction of the tibia will facilitate
assembly and help prevent contact of the proximal
portion of the tibial plate trunnion with the distal
surface of the articular surface. As the tibia is brought
into extension, the articular surface will engage the
tibial plate trunnion as the knee reaches full extension
(Figure 14d).
Figure 14c
Figure 14d