Patent ID: 8512381

Claim:
A system for stabilizing a portion of a spine, comprising: a rod having a non-circular cross-sectional profile; at least two bone fastener assemblies, each bone fastener assembly comprising: a pedicle screw with a collar for coupling the rod to a vertebra, the collar comprising: two upwardly extending walls forming a passage having a profile for receiving a portion of the rod; and a threaded portion; and a threaded closure member for engaging the threaded portion of the collar to couple the rod in the passage; and a wire for advancement of the rod to the passage in a bone fastener assembly coupled to a vertebra, wherein the wire has a length sufficient to extend from outside a patient through the at least two bone fastener assemblies when the assemblies are connected to vertebra, wherein the wire comprises a non-circular cross-sectional profile and wherein the non-circular cross-sectional profiles of the rod and the wire inhibit rotational movement of the rod relative to the wire.