US Patent 9044283 Bone nail with smooth trailing end

A bone nail has a shaft with a leading section and a trailing section, wherein the trailing section includes an end surface having at least one depressed portion and at least one elevated portion. The transition between one of the depressed portions and the adjacent elevated portion is smooth. The end surface is formed so as to transmit rotational forces as well as translational forces from a medical device to the shaft of the bone nail, when the medical device is coupled at the end surface to the trailing section of the bone nail.