Patent ID: 9672662
Date: 2017-06-06
CPC Classifications: A61B,G06F,G06T

Claim:
1. Method for creating a surgical resection plan for treating a pathological deformity of a bone having a rim bounding a substantially hemispherical cavity of the bone, comprising: receiving a set of 3D medical images of said bone, defining from said 3D medical images patient anatomical landmark data comprising a center of said substantially hemispherical cavity in a patient referential, a rim axis extending from said center and generally perpendicular to the opening plane of said substantially hemispherical cavity, a circumferential coordinate system assigned to said rim and a plurality of points located along the rim, determining from said patient anatomical landmark data a 3D patient coverage curve comprising, in the circumferential coordinate system assigned to the rim, a plurality of points representing a coverage parameter of the bone with respect to the substantially hemispherical cavity at a plurality of points along the rim, wherein, for each of said plurality of rim points, said coverage parameter is computed from the coverage angle between (i) the rim axis and (ii) a radius connecting the center of the substantially hemispherical cavity and the respective rim point, receiving reference data corresponding to a reference rim morphology, said data comprising a 3D reference coverage curve, creating: computing and displaying a virtual resection of the bone onto the 3D surface model to simulate removal of over-covered bone portions.