Anchor-in-anchor system for use in bone fixation

摘要

An anchor-in-anchor fixation system is provided for securing underlying structure, such as bone. The fixation system includes a first bone anchor having a shaft for fixation to underlying bone, and a head that defines an internal bore. A second bone anchor extends through the bore and into underlying bone. A fixation assembly is also provided that includes one or more fixation systems coupled to an auxiliary attachment member configured for long bone fixation, spinal fixation, or fixation of other bones as desired.

主权项

1. A method of securing first and second bone anchors to an intramedullary nail, the method comprising the steps of:
inserting the first bone anchor into a bone along a central longitudinal axis, the first bone anchor having a head and a shaft that extends from the head along the central longitudinal axis, and further inserting the first bone anchor into an aperture that extends through the intramedullary nail while the intramedullary nail is disposed in a medullary canal of the bone; and inserting the second bone anchor into a bore that extends through the head of the first bone anchor along a central bore axis of the bore, wherein the central bore axis is angularly offset with respect to the central longitudinal axis, and further inserting the second bone anchor into the bone.