Spinal plate

摘要

Spinal plates with additional features to improve the stability of the interface between the plate and the underlying bone. A bone plate may include one or more sharp ridges along the periphery of its underside. When attached to bone, the ridge digs into the bone and increases stability. A bone plate may alternatively or additionally include one or more holes for optional spikes, which may be inserted once the plate is attached to the bone. By separating the spikes and including them as an optional component, the plate may enhance stability while reducing or eliminating the chance of the spike injuring the patient. Furthermore, bone screws may incorporate alternating notches and ridges into the head of the screw. The notches and ridges may interface with a set screw, thereby preventing rotation and loosening of the screw.

主权项

1. A surgical method comprising:
inserting a spacer body into a disc space; operably connecting a guide member to the spacer body, a distal-most end of the guide member having a threaded portion, the threaded portion threadedly connecting the guide member to the spacer body, wherein the guide member comprises a first rigid portion and a second flexible portion, the rigid portion positioned between the flexible portion and the threaded portion; passing a plate over the guide member to position the plate adjacent to the spacer body, wherein the plate includes at least one hole to receive a fastener and a central hole; inserting a keying tool through the central hole of the plate and into a recessed area of the spacer body to prevent rotation between the plate and the spacer body; and securing the plate to a vertebral body by inserting the fastener through the at least one hole of the plate into the vertebral body.