Importance

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Abstract

A vertebra connection member for connecting multiple vertebrae via a rod. The vertebra connection member has a screw member having a spherical head section provided at one end of the screw member and a screw section for being screwed into the vertebra; a connection member into which the screw member is inserted and that connects the screw member and the rod, said connection member having a head support section receiving the head section and supporting the screw member so that the screw member can be tilted, said connection member further having a rod insertion section into which the rod may be inserted; a head section holding member that is inserted between the rod and the head section inside the connection member, said head section holding member having a head holding section for holding the head section and a rod holding section for holding the rod; and a pushing member that pushes the head section toward the head support section via the rod and head section holding member. At least one of the head section, head support section, and head holding section is subjected to surface roughening.

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First Claim