Product Description The NexGen RH Knee features a modular hinge mechanism that results in 95% of the load being carried by the tibial condyles,1 similar to the loading pattern of a primary implant design. Because the femoral condyles remain centered on the tibia throughout the range of motion, and the shape of the patellar groove is similar to the design of the NexGen system, patella tracking is similar to a primary knee design. For the more challenging arthroplasty procedures, the NexGen RH Knee can be used in conjunction with the Trabecular Metal™ Tibial and Femoral Cones* that address those most difficult bone-loss scenarios. Since the NexGen RH Knee takes advantage of modular design by using NexGen Augments, the basic bone cuts are the same as those made for NexGen Primary System Components. This helps to minimize bone loss and allows use of instrumentation commonly used in primary implant procedures.