| http://www.w3.org/ns/prov#value | - A surgical instrument for urging a longitudinal spinal rod into a bone fastener, the fastener including a head and a bone engaging portion, the head including a bottom surface, two lateral side walls defining a U-shaped channel, and a top opening, the instrument comprising: a holder assembly for engaging the bone fastener, the holder assembly comprising a pair of pivotably connected members arrang
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