ups and downs of Sega’s business. During the 8-bit console war Sega suffered from lack of software. Their answer was to make better software than Nintendo and hope quality would outweigh quantity. Had Sega entered the market at the same time as Nintendo the NES would have faced serious competition. While Nintendo remained complacent with its 8-bit system, Sega leapt ahead to 16-bit technology while maintaining their practice of producing technologically superior games. Phantasy Star II succeeded because of this. By the time Phantasy Star III was released, Sega had become somewhat complacent, like Nintendo had been as Sega introduced the Genesis. Sega rushed the design phase with different designers and produced a sub-par game. Phantasy Star IV and Phantasy Star Online were returns to the original practicesis implanted, although in practice it is often necessary to remove at least the posterior cruciate ligament. It is desirable for tension in the knee ligaments after surgery to be balanced throughout the range of motion of the knee.
The most complex component of a knee prosthesis is the femoral component, as it carries not only the condylar bearing surfaces, but also the patella bearing surface, which extends along an anterior face of the distal femur. Conventional femoral components require resection of the distal end surface of the femur and the anterior and posterior faces of the femur. They also usually require two chamfered cuts to be made at the distal end of the femur anteriorly and posteriorly. The positioning of the femoral cuts determines the position and orientation