The Mobile-bearing Tibial Revision Tray
A tibial revision system must allow the surgeon the options of adjunctive stem fixation, methods to manage bone loss, and various levels of prosthetic constraint. The mobile-bearing tibial revision tray (Figure 5) serves as a stable and versatile foundation in the revision knee setting by offering abundant intraoperative options and a platform to compensate for severe bone loss and soft-tissue deficiencies.
The mobile-bearing tibial revision knee tray encompasses a wide array of options to assist the revision knee surgeon when handling bony and soft-tissue deficiencies. There are multiple sizes of tibial components to allow for proximal tibial coverage. Stepped metaphyseal sleeves allow for the filling of bony defects and superior metaphyseal compressive loading. Trial sleeves are sequentially broached until bony defects are overcome and solid fixation in the metaphyseal bone is achieved. Tibial augmentations are also available to manage uncontained bony defects, allowing the surgeon to achieve a stable platform on good bone for excellent fixation. Cemented or uncemented tibial diaphyseal stems are available in various lengths and diameters, offering the knee surgeon flexibility in achieving a stable construct. The mobile-bearing tibial revision tray allows the revision surgeon to accomplish the goals of filling substantial bony defects, restoring the joint line, and providing a strong foundation for solid fixation with compressive loading of bone.