A medical device, comprising: - a base ring configured to be implanted within a body of a patient, the base ring providing a contact surface to a vertebrae; - multiple pads (120a-120f) having a top surface and a bottom surface, the top surface of the multiple pads (120a-120f) arranged and configured to maintain a parallel plane and the bottom surface of each of the multiple pads (120a-120f) engaging the top surface of the upper leveling plates (106a-106f); - a cover configured to enclose the multiple lower leveling plates (104a-104f), the multiple upper leveling plates (106a-106f), the multiple pads (120a-120f) and the base ring, the cover providing a contact surface to a vertebrae; and - a compressible member arranged through a center of the multiple lower leveling plates (104a-104f), the multiple upper leveling plates (106a-106f) and the multiple pads (120a-120f), the compressible member having a top surface engaging the cover, characterized in that the device further comprises - multiple lower leveling plates (104a-104f) having a non-flat bottom surface, the non-flat bottom surface of each of the multiple lower leveling plates (104a-104f) engaging an inner surface of the base ring and each of the multiple lower leveling plates (104a-104f) held in place within the base ring by a member (112a-112f) extending from the base ring through a bore in the lower leveling plate (104a-104f); - multiple upper leveling plates (106a-106f) having a bottom surface, the bottom surface of each of the multiple upper leveling plates (106a-106f) engaging a top surface of the multiple lower leveling plates (104a-104f) and each of the multiple upper leveling plates (106a-106f) held in place within the base ring by a member (118a-118f) extending through the upper leveling plate (106a-106f) and engaging bores in the base ring. - a base ring configured to be implanted within a body of a patient, the base ring providing a contact surface to a vertebrae; - multiple pads (120a-120f) having a top surface and a bottom surface, the top surface of the multiple pads (120a-120f) arranged and configured to maintain a parallel plane and the bottom surface of each of the multiple pads (120a-120f) engaging the top surface of the upper leveling plates (106a-106f); - a cover configured to enclose the multiple lower leveling plates (104a-104f), the multiple upper leveling plates (106a-106f), the multiple pads (120a-120f) and the base ring, the cover providing a contact surface to a vertebrae; and - a compressible member arranged through a center of the multiple lower leveling plates (104a-104f), the multiple upper leveling plates (106a-106f) and the multiple pads (120a-120f), the compressible member having a top surface engaging the cover, characterized in that the device further comprises - multiple lower leveling plates (104a-104f) having a non-flat bottom surface, the non-flat bottom surface of each of the multiple lower leveling plates (104a-104f) engaging an inner surface of the base ring and each of the multiple lower leveling plates (104a-104f) held in place within the base ring by a member (112a-112f) extending from the base ring through a bore in the lower leveling plate (104a-104f); - multiple upper leveling plates (106a-106f) having a bottom surface, the bottom surface of each of the multiple upper leveling plates (106a-106f) engaging a top surface of the multiple lower leveling plates (104a-104f) and each of the multiple upper leveling plates (106a-106f) held in place within the base ring by a member (118a-118f) extending through the upper leveling plate (106a-106f) and engaging bores in the base ring.