Provided is a novel hip replacement implant system that includes a ball assembly having a ball trunion, the ball assembly being configured as a replacement for the head of the femur and capable of being secured by the ball assembly trunion to a calcar implant element that can be securely seated in the calcar bone of the femoral neck, thus maintaining the load transfer function of the calcar bone of the femoral neck. A method of using the device is also provided.