An article including a spinal prosthesis having a unitary body with at least three attachment points attachable to spinal structure, the unitary body including a flexure assembly positioned between first and second attachment members, wherein flexure of the flexure assembly permits movement of the first attachment member relative to the second attachment member. The membranes may be incorporated in active metal negative electrode structures and battery cells. The method may further comprise monitoring, via at least one of the client electronic device and the server computer, an incoming communication from a contact and an outgoing communication to the contact. The microprocessor has a plurality of timers which are visible and accessible only by the secure application program when executing in a secure execution mode. The connecting portion has a first end and a second end. A backlight module using the present prism sheet is also provided.