Rapid custom intra-articular ligament reconstruction guide

摘要

Custom surgical guides based on the patient's unique anatomy that can be quickly and accurately applied intra-operatively without navigation are disclosed. The device is created using preoperative MRI images and uniquely conforms to the bone in the region of the desired tunnel. The images are filtered and used to generate computerized three dimensional models of the patient's anatomy. The models can be introduced through a portal and applied to the bone denuded of soft tissue.

主权项

1. A method of creating a surgical guide, comprising the steps of:
imaging a patient's bone-to-bone joint; collecting a set of images of the patient's bone-to-bone joint; generating a first mask on the set of images; processing the first mask to remove artifacts; generating a second mask on the set of images; processing the second mask to remove artifacts; merging the first and second masks and cropping the merged masks to highlight attachment points of a ligament; generating a third mask by filling in any holes between the two merged masks; generating a three dimensional image of the highlighted ligament attachment points; generating a reverse image of the three dimensional image of the highlighted ligament attachment points; slicing the reverse image allowing access to contours of the bones in the reverse image; creating a reverse template of each of the ligament attachment points; creating a three dimensional model of each template; and generating a surgical guide from the three dimensional model of each of the templates, wherein the surgical guides each consists of a body, a tooling guide, and at least one face adapted to fit the interstitial space between the bones of the joint and inversely contoured to a shape of the patient's joint anatomy, wherein the at least one face is disposed on a proximal end of the body, and the tooling guide is disposed on a distal end of the body.