25. An anchor assembly comprising: an anchor body; an anchor head including a first arm and a second arm extending substantially parallel to one another and away from the anchor body, the first arm and the second arm separated by a gap; a saddle having a longitudinal bore, a transverse bore which intersects the longitudinal bore, and a slot adapted to receive a member wherein the slot bisects a proximal end to the saddle into a first section and a second section; a shaft connected to the first arm and the second arm across the gap wherein said transverse bore of said saddle is mounted about said shaft such that the saddle can move relative to the anchor head; a fastener received in said longitudinal bore of said saddle and adapted to lock the member in said slot of said saddle; and wherein said first section and second section are roof-shaped to prevent splaying apart of the first section and second section when said fastener locks the member in said slot of saddle.
29. The anchor assembly of claim 25 , further comprising a saddle-mounting element mounted over said shaft wherein said transverse bore of said saddle is mounted about said saddle-mounting element mounted about said shaft such that the saddle can move relative to the anchor head.