Systems and methods for determining a position for placing of a joint prosthesis
First Claim
1. A method of determining a position for a joint implant, the method comprising:
 generating a function based on patient specific data comprising locational data for one or more patient bones associated with the joint, and a plurality of flexion points, each flexion point corresponding to a positional angle of the joint;
receiving an initial parameter set for placing the joint implant, wherein the initial parameter set comprises a plurality of parameters;
applying the function to the initial parameter set to determine an initial result, comprising calculating at least one of a gap distance and an overlap distance for each of the flexion points based on the initial parameter set;
generating a plurality of candidate parameter sets for placing the joint implant, wherein each of the plurality of candidate parameter sets comprises the initial parameter set with a changed value for at least one of the plurality of parameters;
applying the function to each of the candidate parameter sets to determine a candidate result, comprising calculating at least one of a gap distance and an overlap distance for each of the flexion points based on the candidate parameter set;
ranking the plurality of candidate parameter sets and the initial parameter set based on the associated candidate results and initial result;
selecting a parameter set from the plurality of candidate sets and the initial parameter set having a highest ranked result; and
generating a surgical plan for placing the joint implant based on the selected parameter set.
1 Assignment
0 Petitions
Accused Products
Abstract
Systems and methods for virtual implant placement to implement joint gap planning are discussed. For example, a method can include operations for receiving a first implant parameter set based on a surgical plan that was generated while moving the joint through a range of motion. The method can include generating a first set of candidate implant parameter sets that are the result of an incremental change, relative to the first implant parameter set, to at least one parameter of the first parameter set. The method can include calculating a result for at least one candidate implant parameter set and providing a graphical representation of the result according to at least one candidate implant parameter set. The result can be colorcoded to correlate to a candidate implant parameter set. The display can include colorcoded user interface controls to allow a user to execute incremental changes corresponding to candidate implant parameter sets.
63 Citations
16 Claims

1. A method of determining a position for a joint implant, the method comprising:

generating a function based on patient specific data comprising locational data for one or more patient bones associated with the joint, and a plurality of flexion points, each flexion point corresponding to a positional angle of the joint; receiving an initial parameter set for placing the joint implant, wherein the initial parameter set comprises a plurality of parameters; applying the function to the initial parameter set to determine an initial result, comprising calculating at least one of a gap distance and an overlap distance for each of the flexion points based on the initial parameter set; generating a plurality of candidate parameter sets for placing the joint implant, wherein each of the plurality of candidate parameter sets comprises the initial parameter set with a changed value for at least one of the plurality of parameters; applying the function to each of the candidate parameter sets to determine a candidate result, comprising calculating at least one of a gap distance and an overlap distance for each of the flexion points based on the candidate parameter set; ranking the plurality of candidate parameter sets and the initial parameter set based on the associated candidate results and initial result; selecting a parameter set from the plurality of candidate sets and the initial parameter set having a highest ranked result; and generating a surgical plan for placing the joint implant based on the selected parameter set.  View Dependent Claims (2, 3, 4, 5, 6, 7, 8)


9. A method of determining a position for a joint implant, the method comprising:

generating a function based on patient specific data comprising locational data for one or more patient bones associated with the joint, and a plurality of flexion points, each flexion point corresponding to a positional angle of the joint; receiving an initial parameter set for placing the joint implant, wherein the initial parameter set comprises a plurality of parameters; applying the function to the initial parameter set to determine an initial result, comprising calculating at least one of a gap distance and an overlap distance for each of the flexion points based on the initial parameter set; generating a plurality of candidate parameter sets for placing the joint implant, wherein each of the plurality of candidate parameter sets comprises the initial parameter set with a changed value for at least one of the plurality of parameters; applying the function to each of the candidate parameter sets to determine a candidate result, comprising calculating at least one of a gap distance and an overlap distance for each of the flexion points based on the candidate parameter set; ranking the plurality of candidate parameter sets and the initial parameter set based on the associated candidate results and initial result; replacing the initial parameter set with a parameter set having the highest ranked result from the plurality of candidate sets and the initial parameter set; repeating the applying, generating, applying, ranking, and replacing operations until the initial parameter set is the parameter set having the highest ranked result; and generating a surgical plan for placing the joint implant based on the parameter set having the highest ranked result.  View Dependent Claims (10, 11, 12, 13, 14, 15, 16)

1 Specification