Spinal insert and method of spinal adjustment

摘要

A spinal insert provides for a method of spinal adjustment to adjust inter-vertebral spacing and alignment of vertebral bodies relative to a pre-determined reference line determined from measurement including but not limited to the pelvic incidence, pelvic tilt, and C7 plumb line. The device includes an upper arm and a lower arm extending outwardly from a base section defining a frame. An adjustment member is positioned between the upper arm and the lower arm. The adjustment member has a plurality of distinct lengths measured straight through a center of the adjustment member. The adjustment member is rotatable wherein an angle between the upper arm and the lower arm is selectively adjustable by rotation of the adjustment member. Spacing of vertebral endplates using a plurality of the frames described permits adjustment of the vertebral bodies to a desired angle relative to the pelvic orientation of an individual patient.

主权项

1. An inter-vertebral spinal insert cage device comprising:
a frame having an upper arm, a lower arm and a base section, each of said upper arm and said lower arm extending outwardly from said base section, said upper arm having a substantially planar upper surface, said lower arm having a substantially planar lower surface; an adjustment member positioned between said upper arm and said lower arm, said adjustment member having an outer perimeter, said adjustment member having a plurality of distinct lengths measured straight through a center of said adjustment member, said adjustment member being rotatable wherein an angle between said upper arm and said lower arm is selectively adjustable by rotation of said adjustment member; an opening extending through said base section; and an adjustment shaft extending from said adjustment member, said adjustment shaft having a distal end relative to said adjustment member extending into said opening through said base section, said distal end of said adjustment shaft being configured for being engaged by a tool wherein said adjustment member is rotatable by manipulating said tool.