Patent Number: 7,822,588

Title: Surface replacement of a femoral head

Abstract: A method for selecting a femoral implant based on models of a femoral neck and/or a femoral head of a patient is provided. A femoral neck model and/or femoral head model is produced from three-dimensional reference point spatial positions of the femoral neck or head, and a base size of a femoral implant model is ascertained based on the femoral head model. A femoral implant model is produced from the base size, and the implant model is positioned at a position in or on the femoral head model. An implant value is ascertained that indicates how many or what proportion of the ascertained reference point spatial positions are outside the implant model. If the implant value exceeds a predetermined value, the implant model is repositioned and the process is repeated. If the implant value does not exceed the value, an appropriate size and position of the implant is determined.

Inventors: Mueller; Heiko (Munich, DE), Dick; Robert (Munich, DE), Adamski; Martin (Munich, DE), Tuma; Gregor (Munich, DE)

Assignee: BrainLAB AG

International Classification: G06G 7/48 (20060101)

Expiration Date: 2018-10-26 0:00:00