Systems and methods for planning and performing image free implant revision surgery
Systems and methods for planning and performing image free implant revision surgery are discussed. For example, a method for generating a revision plan can include collecting pre-defined parameters characterizing a target bone, generating a 3D model, collecting a plurality of surface points, and generating a reshaped 3D model. Generating the 3D model of the target bone can be based on a first portion of the pre-defined parameters. Generating the reshaped 3D model can be done based on the plurality of surface points collected from a portion of the surface of the target bone.
1 . A method for conducting a revision surgical procedure, the method comprising:
removing an existing implant from a target bone;
removing a deteriorated portion from the target bone, to form a modified target bone;
reinserting the existing implant onto the modified target bone;
tracking a trackable surgical instrument to collect three-dimensional surface data of the modified target bone with the existing implant reinserted onto the modified target bone;
generating a virtual three-dimensional model of the modified target bone based on the surface data;
removing the existing implant from the modified target bone;
preparing the modified target bone to receive a revision implant based on the virtual three-dimensional model; and
affixing the revision implant into the modified target bone.
2 . The method of claim 1 , wherein the trackable surgical instrument comprises a point probe.
3 . The method of claim 1 , wherein the trackable surgical instrument comprises an optical tracking array.
4 . The method of claim 1 , wherein the virtual three-dimensional model is used to assess a fit of the revision implant.
5 . The method of claim 1 , wherein the virtual three-dimensional model is used to select a size and shape of the revision implant.
6 . The method of claim 5 , wherein the revision implant is a patient-specific implant based on the virtual three-dimensional model.
7 . The method of claim 1 , wherein preparing the modified target bone includes resecting additional bone material.
8 . The method of claim 1 , further comprising capturing range of motion data of a joint associated with the modified target bone prior to removing the existing implant.
9 . The method of claim 1 , wherein the surface data of the modified target bone is captured at locations comprising at least one of a knee center, a most anterior point, a most posterior point, and medial and lateral epicondyle points.
10 . The method of claim 1 , wherein preparing the modified target bone further comprises navigating, by a computer-assisted surgery system, a surgical tool to prepare the modified target bone.
11 . A system for conducting a revision surgical procedure, the system comprising:
a first surgical instrument configured to remove an existing implant from a target bone;
a second surgical instrument configured to remove a deteriorated portion from the target bone, generating a modified target bone;
a trackable surgical instrument configured to collect three-dimensional surface data of the modified target bone with the existing implant reinserted onto the modified target bone; and
a control system comprising a communication interface and at least one processor coupled to a memory device, wherein the control system is coupled to the tracking system and is configured to:
generate a virtual three-dimensional model of the modified target bone based on the surface data,
navigate preparation of the modified target bone for receiving a revision implant based on the virtual three-dimensional model, and
navigate affixation of the revision implant into the modified target bone.
12 . The system of claim 11 , wherein the trackable surgical instrument comprises a point probe.
13 . The system of claim 11 , wherein the trackable surgical instrument comprises an optical tracking array.
14 . The system of claim 11 , wherein the at least one processor utilizes the virtual three-dimensional model to assess a fit of the revision implant.
15 . The system of claim 11 , wherein the at least one processor utilizes the virtual three-dimensional model to select a size and shape of the revision implant.
16 . The system of claim 15 , wherein the revision implant is a patient-specific implant selected based on the virtual three-dimensional model.
17 . The system of claim 11 , wherein the preparation of the modified target bone further comprises the control of the second surgical instrument.
18 . The system of claim 11 , wherein the at least one processor is further configured to capture range of motion data of a joint associated with the modified target bone prior to removing the existing implant.
19 . The system of claim 11 , wherein the trackable surgical instrument is configured to capture the surface data of the modified target bone at locations comprising at least one of a knee center, a most anterior point, a most posterior point, and medial and lateral epicondyle points.