| 摘要 |
An apparatus (100) for replacing at least a portion of an intervertebral dis c in a spinal column includes: a first member (200) having a first vertebral contact surface (202) for engagement with an endplate of a first vertebral bone in the spinal column, and having a first saddle shaped articulation surface (212, 214); and a second member (300) having a second vertebral contact surface (302) for engagement with an endplate of a second vertebral bone in the spinal column, and having a second saddle shaped articulation surface (312, 314), wherein: an intervertebral disc space is defined substantially between the first and second endplates of the first and second vertebral bones, and the first and second articulation surfaces (212, 214, 312, 314) are sized and shaped to engage one another when the first and seco nd members (200, 300) are disposed in the intervertebral disc space to enable t he first and second vertebral bones to articulate in at least one of flexion, extension and lateral bending. |
