Method for creating a customized arthroplasty resection guide utilizing two-dimensional imaging
Aspects of the present disclosure involve systems, methods, computer program products for customized arthroplasty cutting guides or jigs. In particular, the present disclosure provides for a method of creating a customized arthroplasty cutting jig from one or more two-dimensional (2D) images of the patient's joint. The method includes receiving the 2D images of the joint from an imaging device, reformatting the images, and creating a customized jig template from the images. One or more landmarks are electronically marked on one or more of the series of 2D images of the patient's joint through a computing device. Once the template for the cutting jig is created utilizing one or more of the electronic markers on the 2D images, a cutting or milling program is generated by the computing device that may then be provided to a milling machine to create the cutting jig corresponding to the milling program.
1. A method for creating a cutting jig for an arthroplasty procedure, the method comprising: receiving a plurality of two-dimensional images of a patient's joint the subject of the arthroplasty procedure; reformatting the two-dimensional images to approximate a true anatomical coordinate of the patient's joint; locating a plurality of mating shapes within the reformatted plurality of two-dimensional images of the patient's joint, the plurality of mating shapes corresponding to a plurality of mating shapes of a cutting jig for use during the arthroplasty procedure; generating a milling program based at least on the placement of the mating shapes within the reformatted plurality of two-dimensional images of the patient's joint; and milling the cutting jig based at least on the milling program, wherein locating the plurality of mating shapes within the reformatted plurality of two-dimensional images comprises indicating a position of a first circular mating shape of a femoral portion of the cutting jig such that the first circular mating shape of the femoral portion contacts at least one femoral condyle within an anterior trochlear groove of the patient's joint as illustrated in a first one of the plurality of two-dimensional images of the patient's joint.
2. The method of claim 1 further comprising:
generating the plurality of two-dimensional images of a patient's joint the subject of the arthroplasty procedure utilizing a magnetic-resonance imaging machine.
3. The method of claim 1 wherein reformatting the two-dimensional images comprises:
identifying one or more landmarks on the plurality of two-dimensional images of a patient's joint; and
reorienting the plurality of two-dimensional images of a patient's joint based at least on the one or more landmarks.
4. The method of claim 1 wherein locating the plurality of mating shapes within the reformatted plurality of two-dimensional images further comprises:
indicating a position of a first portion of a trapezoidal mating shape of the femoral portion of the cutting jig such that the first portion of a trapezoidal mating shape tangentially contacts an inner surface of a first condyle of the patient's joint as illustrated in a second one of the plurality of two-dimensional images of the patient's joint; and
indicating a position of a second portion of a trapezoidal mating shape of the femoral portion of the cutting jig such that the second portion of a trapezoidal mating shape tangentially contacts an inner surface of a second condyle of the patient's joint as illustrated in the second one of the plurality of two-dimensional images of the patient's joint.
5. The method of claim 4 wherein locating the plurality of mating shapes within the reformatted plurality of two-dimensional images further comprises:
indicating a position of a second circular mating shape of the femoral portion of the cutting jig such that the second circular mating shape of the femoral portion contacts at least the first condyle of the patient's joint as illustrated in a third one of the plurality of two-dimensional images of the patient's joint, the contact of the second circular mating shape of the femoral portion posterior of the position of the first circular mating shape of the femoral portion; and
indicating a position of a third circular mating shape of the femoral portion of the cutting jig such that the third circular mating shape of the femoral portion contacts at least the second condyle of the patient's joint as illustrated in the third one of the plurality of two-dimensional images of the patient's joint, the contact of the third circular mating shape of the femoral portion also posterior of the position of the first circular mating shape of the femoral portion.
6. The method of claim 5 wherein locating the plurality of mating shapes within the reformatted plurality of two-dimensional images further comprises indicating a position of a fourth circular mating shape of the femoral portion of the cutting jig such that the fourth circular mating shape of the femoral portion contacts at least one femoral condyle within a middle portion of the trochlear groove of the patient's joint as illustrated in a fourth one of the plurality of two-dimensional images of the patient's joint, the middle portion of the trochlear groove located between the contact of the first circular mating shape of the femoral portion and the second circular mating shape of the femoral portion along the trochlear groove of the patient's joint as illustrated in a fourth one of the plurality of two-dimensional images of the patient's joint.
7. The method of claim 6 wherein locating the plurality of mating shapes within the reformatted plurality of two-dimensional images further comprises indicating a position of a first circular mating shape of a tibial portion of the cutting jig and a second circular mating shape of the tibial portion of the cutting jig such that the first circular mating shape of the tibial portion and the second circular mating shape of the tibial portion contact the tibial anterior surface of the patient's joint as illustrated in a fifth one of the plurality of two-dimensional images of the patient's joint.
8. The method of claim 7 wherein locating the plurality of mating shapes within the reformatted plurality of two-dimensional images further comprises:
indicating a position of a third circular mating shape of the tibial portion of the cutting jig such that the third circular mating shape of the tibial portion contacts a medial tibial plateau surface of the patient's joint as illustrated in a sixth one of the plurality of two-dimensional images of the patient's joint; and
indicating a position of a fourth circular mating shape of the tibial portion of the cutting jig such that the fourth circular mating shape of the tibial portion contacts a lateral tibial plateau surface of the patient's joint as illustrated in a seventh one of the plurality of two-dimensional images of the patient's joint.
9. The method of claim 8 wherein locating the plurality of mating shapes within the reformatted plurality of two-dimensional images further comprises:
indicating a position of a fifth circular mating shape of the tibial portion of the cutting jig such that the fifth circular mating shape of the tibial portion contacts a medial tibial plateau surface of the patient's joint as illustrated in an eighth one of the plurality of two-dimensional images of the patient's joint, the contact of the fifth circular mating shape of the tibial portion being posterior of the position of the third circular mating shape of the tibial portion; and
indicating a position of a sixth circular mating shape of the tibial portion of the cutting jig such that the sixth circular mating shape of the tibial portion contacts a lateral tibial plateau surface of the patient's joint as illustrated in a ninth one of the plurality of two-dimensional images of the patient's joint, the contact of the sixth circular mating shape of the tibial portion being posterior of the position of the fourth circular mating shape of the tibial portion.
10. The method of claim 9 wherein locating the plurality of mating shapes within the reformatted plurality of two-dimensional images further comprises indicating a position of a seventh circular mating shape of the tibial portion of the cutting jig such that the seventh circular mating shape of the tibial portion contacts the lateral tibial plateau surface of the patient's joint as illustrated in a tenth one of the plurality of two-dimensional images of the patient's joint, the contact of the seventh circular mating shape of the tibial portion being between the contact of the fourth circular mating shape of the tibial portion and the sixth circular mating shape of the tibial portion on the lateral tibial plateau surface of the patient's joint as illustrated in the tenth one of the plurality of two-dimensional images of the patient's joint.