ACETABULAR IMPLANT ALIGNMENT DEVICES AND METHODS

摘要

A trial medical instrument for aligning an acetabular component, comprising: a first portion configured to fit within a patient's acetabulum; and a second portion extending from the first portion; wherein the second portion extends from the first portion in a direction that mimics a shape formed by a femoral implant component coupled with an acetabular implant component when a femur to which the femoral implant component is coupled is in a position relative to an acetabulum to which the acetabular implant component is coupled that is near an extent of a typical range of motion of the femur. As used herein, the phrase “extent of a typical range of motion” describes typical angular displacements of a femur as usually limited by patient anatomy.

主权项

1. A method for aligning and implanting an acetabular component using a trial component, the method comprising:
coupling the trial component to a femur to align the trial component in a fixed, predetermined relationship with the femur; placing the trial component into an acetabulum, wherein the trial component is configured to be moved within the acetabulum via the femur to indicate a position for implanting the acetabular component within the acetabulum; positioning the femur in a first position relative to the acetabulum; moving the femur from the first position to a second position relative to the acetabulum, wherein the fixed relationship between the trial component and the femur causes the trial component to move relative to the acetabulum; recording a position of the trial component relative to the acetabulum when the femur is in the second position; and implanting the acetabular component based on the recorded position of the trial component.