Patent ID: 8702755

Claim:
A dynamic spine prosthesis comprising: a fixation element having an elongated bone entry portion defining a longitudinal axis; a dynamic spine prosthesis component connected to the fixation element at a connection location by an adjustable connection, the adjustable connection comprising first and second washers each rotatably supported by the fixation element and each having an angled contact surface in a plane not perpendicular to the longitudinal axis of the fixation element, the connection location being between the bone entry portion and the first and second washers, wherein the angled contact surfaces of the first and second washers are in contact with each other, wherein each of the first and second washers can be rotated about the fixation element to change the angle between a portion of the dynamic spine prosthesis component and the fixation element, and wherein the first washer includes an angled surface on a bottom most surface and the second washer includes an angled surface on a top most surface; and a third washer between the dynamic spine prosthesis and the bone entry portion of the fixation element.