The GENUTECH® system for primary knee arthroplasty has been designed by a distinguished group of experts in Orthopedic Surgery and Traumatology to provide a combination of optimum resistance, mobility, fixation and durability. Its use is directed at those patients that have adequate bone stock and correct varus/valgus and to ligament stability. The NPS GENUTECH® Cemented Femoral Component has been intelligently designed for surgery where it is decided to conserve the Posterior Crossed Ligament, introducing the following innovations: a. Optimization of contact between the patellar channel and patella through several methods: - Looking for maximum articular suitability between the channel and the patella, therefore minimizing tension between them and considerably reducing the risk of wear. - Increasing depth channel which aids guiding and contact. - Orientating the patellar channel in accordance with the anatomic morphology. - Interline maintenance philosophy. b. Anatomic Femoral Components to aid implant adaptation to the anatomic morphology after surgery.