Patient-adapted and improved articular implants, designs and related guide tools
View Patent ↗Methods and devices are disclosed relating improved articular models, implant components, and related guide tools and procedures. In addition, methods and devices are disclosed relating articular models, implant components, and/or related guide tools and procedures that include one or more features derived from patient-data, for example, images of the patient's joint. The data can be used to create a model for analyzing a patient's joint and to devise and evaluate a course of corrective action. The data also can be used to create patient-adapted implant components and related tools and procedures.
1. A patient-specific femoral implant for implantation on a portion of a femur of a patient's knee, comprising:
a condylar portion having a bone-facing surface for abutting at least a portion of a condyle of the patient's knee and an articular surface generally opposite the bone-facing surface; the articular surface having a patient-specific curvature generally disposed in a first plane, the patient-specific curvature substantially replicating a corresponding curvature of at least a portion of the patient's condyle and being located approximately in the same location as the corresponding curvature of the patient's condyle when the bone-facing surface abuts the condyle.
2. The patient-specific femoral implant of claim 1 , wherein the patient-specific curvature includes varying radii or curvatures in the first plane.
3. The patient-specific femoral implant of claim 1 , wherein the first plane is an anteroposterior, mediolateral, superoinferior or oblique plane.
4. The patient-specific femoral implant of claim 1 , wherein the articular surface includes a single radius in one or more planes.
5. A patient-specific femoral implant for implantation on a portion of a femur of a patient's knee, comprising:
a first condylar portion having a first bone-facing surface for abutting at least a portion of a first condyle of the patient's knee and a first articular surface generally opposite the first bone-facing surface; and
a second condylar portion having a second bone-facing surface for abutting at least a portion of a second condyle of the patient's knee and a second articular surface generally opposite the second bone-facing surface;
the first articular surface having a first patient-specific curvature generally disposed in a first plane, the first patient-specific curvature substantially replicating a curvature of the patient's first condyle and being located approximately in the same location as the curvature of the patient's first condyle when the first bone-facing surface abuts the condyle; and
the second articular surface having a second patient-specific curvature generally disposed in a second plane, the second patient-specific curvature substantially replicating a curvature of the patient's second condyle and being located approximately in the same location as the curvature of the patient's second condyle when the second bone-facing surface abuts the second condyle.
6. The patient-specific femoral implant of claim 5 , wherein the first patient-specific curvature include varying radii in a first plane.
7. The patient-specific femoral implant of claim 6 , wherein the first plane is an anteroposterior, mediolateral, superoinferior or oblique plane.
8. The patient-specific femoral implant of claim 5 , wherein the second patient-specific curvature include varying radii in a second plane.
9. The patient-specific femoral implant of claim 8 , wherein the second plane is an anteroposterior, mediolateral, superoinferior or oblique plane.
10. The patient-specific femoral implant of claim 5 , wherein the first articular surface includes a single radius in one or more planes.
11. The patient-specific femoral implant of claim 5 , wherein the second articular surface includes a single radius in one or more planes.