| 摘要 |
Instrumentation for treatment of the spine, including an elongate member having a deformable distal end portion at least partially formed of a flexib le and preferably elastic material. The distal end portion has an initial configuration for placement adjacent a vertebral body and a deformed configuration defining at least one outwardly extending projection for displacement of at least a portion of the vertebral body. The elongate membe r preferably comprises a rod member, a sleeve member and an actuator mechanism for imparting relative linear displacement between the rod and sleeve member s to effect outward deformation of the distal end portion of the sleeve member . In one embodiment, the instrumentation is used to compact cancellous bone to form a cavity within a vertebral body. In another embodiment, the instrumentation is used to reduce a compression facture. In yet another embodiment, the instrumentation is used to distract a disc space between adjacent vertebral bodies.
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