The NexGen LCCK is intended for patients who, in the surgeon's judgment, require additional prosthetic stabilization due to inadequate mediolateral, anteroposterior, and varus/valgus ligament function, and require augmentation and/or stem extensions due to inadequate bone stock. For use when both cruciate ligaments are excised and when greater varus/valgus constraint is required (an LCCK Femoral Component can be used with NexGen LPS Articular Surface, however, less varus/valgus constraint is provided). The NexGen LCCK can be used with augments and stem extensions.
For patients who lack functional collateral ligaments or whose knees cannot be stabilized by the usual tissue releases, the LCCK features an elevated tibial spine and deeper femoral intercondylar box. A close fit between the spine and box provides stability as the mechanical rollback is induced, inhibiting posterior subluxation and limiting varus/valgus movement to +1.25 degrees and internal/external rotation to +2 degrees. This design accommodates a theoretical range of motion in excess of 120 degrees.
For patients with inadequate bone stock, tibial and femoral augments offer true patient specificity. Tibial: third-, half-, and full-wedge augments or 5-20mm blocks in 5mm increments in Titanium or up to 30mm in Trabecular Metal Material. Femoral: posterior, distal, posterior/distal, and anterior augments. Augments are designed for either screw or cement fixation (anterior augments are cement fixation only), and come available in either Titanium or Trabecular Metal Material.
The Zimmer NexGen LCCK System offers a reported survivorship of 96% at 10+ years when used for revision TKA.1
Interchangeable between all stemmable NexGen Femoral and Tibial Components, straight and offset stem extensions allow the surgeon to optimize canal fill and component positioning.
For patients whose canal is not centered relative to the distal femur or proximal tibial surface, the patented offset design allows the component to be positioned 4.5mm away from the center of the canal in any direction. This flexibility provides for a full 360 degrees of orientation for improved bone coverage, and allows the surgeon to optimize implant position.
Please refer to the package inserts for complete product information, including contraindications, warnings, precautions, and adverse effects.
This device is indicated for patients with severe knee pain and disability due to:
Appropriate matching of components will occur when the femoral and tibial baseplate colors and/or sizes are matched to the articular surface label. Mismatching may result in poor surface contact and could produce pain, decrease wear resistance, produce instability of the implant, or otherwise reduce implant life.
Use only instruments and provisionals specifically designed for use with these devices to help ensure accurate surgical implantation, soft tissue balancing, and evaluation of knee function.
Selection of polyethylene components is a matter of physician discretion. Thicker polyethylene components may be needed if the patient is young, heavy, and/or physically active.
Total knee arthroplasty is contraindicated in patients who have rheumatoid arthritis (RA) and an ulcer of the skin or a history of recurrent breakdown of the skin because their risk of postoperative infection is greater. RA patients using steroids may also have increased risk of infection. Late infections in RA patients have been reported 24+ months postoperative.