Femoral trochlea prostheses

A femoral trochlea prosthesis for implantation in a distal femur of a knee joint, the prosthesis articulating with a patellar component of the knee joint, the prosthesis comprising:

• an articulating surface;
• a nonarticulating surface, said nonarticulating surface defining at least one anterior nonarticulating surface and at least one distal nonarticulating surface;
• and
• at least one fixation support extending proximally from said distal nonarticulating surface proximate a distal most region of the prosthesis, said fixation support extending in a direction substantially perpendicular to said at least one distal nonarticulating surface and in a direction nonparallel and non-perpendicular with said anterior nonarticulating surface, said articulating surface transitioning smoothly in a posterior direction into said fixation support proximally of said distal nonarticulating surface.