Method for orienting an acetabular cup and instruments for use therewith

摘要

A patient-specific acetabular guide for use in orienting an acetabular component with respect to an acetabulum of a patient as part of a surgical procedure includes a body having a bottom contact surface that has a portion that is shaped and configured to initimately receive and interlockingly mate with an acetabular notch of the patient's acetabulum in accordance with a three-dimensional image of the acetabulum of the specific patient. The three-dimensional image can be in the form of a three-dimensional virtual model of the patient's acetabulum that is constructed at least in part on 3D image data of the pelvic region of the patient.

主权项

1. A method for forming a patient-specific acetabular guide for use in orienting an acetabular component with respect to an acetabulum of a patient as part of a surgical procedure, the method comprising the steps of:
obtaining at least one image of the patient including at least 3D image data of a pelvic region of the patient; constructing a three-dimensional (3D) virtual model of an acetabulum of the patient based on the 3D image data of the pelvic region and based on a prescribed orientation of the acetabular component; constructing an initial patient-specific virtual acetabular guide; performing one or more modeling operations on the initial patient-specific virtual guide in view of the 3D virtual model of the acetabulum so as to form a final patient-specific virtual guide which has a bottom surface which has a portion that is shaped and configured based on the 3D virtual model of the acetabulum to initimately receive and interlockingly mate with an acetabular notch of the patient's acetabulum for attaching the patient-specific guide to the acetabulum according to the prescribed orientation; and forming the patient-specific acetabular guide based on the final patient-specific virtual guide.