Vertebral implants including asymmetric endplate contours and methods of use

摘要

An implant for insertion into a patient includes a superior surface disposed at a first end of the implant and an inferior surface disposed at a second, opposite end of the implant. The superior and inferior surfaces of the implant are constructed with curvatures that approximately match the morphology of vertebral endplates. The inferior surface and superior surface may include the same or different radii of curvature within the coronal and sagittal planes. The inferior surface and superior surface may be defined by spherical radii. The radius of the superior surface may be about 60 percent to 74 percent of the radius of the inferior surface.

主权项

1. A vertebral implant for insertion into an intervertebral space between first and second vertebral bodies within a patient comprising:
a superior surface disposed at a first side of the implant to contact the first vertebral body; and an inferior surface disposed at a second, opposite side of the implant to contact the second vertebral body; the inferior surface including a first radius of curvature within a first plane that extends through the superior and inferior surfaces and bisects the implant; the superior surface including a second radius of curvature within the first plane, the second radius being between about 60 percent to about 74 percent of the first radius.