METHOD FOR HIP RESECTION ALIGNMENT APPROXIMATION IN HIP REPLACEMENT PROCEDURES

摘要

Aspects of the present disclosure involve systems, methods, computer program products, manufacturing processes and the like, for utilizing a series of images of a patient's anatomy to determine an estimation of relevant lengths and angles and other dimensions for use during a hip replacement procedure, which may be used to create one or more femur and/or acetabulum cavity implants or inserts useful in a partial or total hip replacement. In one particular embodiment, a jig mechanism for providing a scraper of the acetabulum cavity may be created with the information of the patient's anatomy. Further, the location of these features in the images may be determined by analyzing the gray scale value of one or more pixels around a selected point on the image. The pixel with the lowest gray scale value may then be assumed to be the edge of the cortical bone in the 2D image.

主权项

1. A method for determining an orientation of an implant for an arthroplasty procedure on a human hip joint, the method comprising:
receiving a plurality of two-dimensional (2D) images of a patient's joint subject to the arthroplasty procedure at a computing device; providing a sequence of interior images of a neck of a femur from the plurality of 2D images of the patient's joint, the interior images corresponding to cross-section images of the neck of the femur and spaced apart by a positive distance; estimating a center coordinate for each of the sequence of interior images of the neck of the femur, the center coordinate corresponding to a coordinate in a global coordinate system of the plurality of 2D images of the patient's joint; calculating a best fit linear segment corresponding to at least two of the center coordinates for the sequence of interior images of the neck of the femur; estimating a center coordinate and a diameter for an acetabulum feature of the patient from at least one of the plurality of 2D images of the patient's joint; providing an acetabulum cavity cup insert comprising a diameter corresponding to the estimated diameter for the acetabulum feature of the patient from at least one of the plurality of 2D images of the patient's joint; and aligning the center of the acetabulum cavity cup insert with the best fit linear segment corresponding to at least two of the center coordinates for the sequence of interior images of the neck of the femur.