Meniscus prosthetic device selection and implantation methods
First Claim
1. A method of selecting a meniscus prosthetic device for a patient from a library of available prosthetic devices, the method comprising:
- a pre-implantation matching process comprising;
a direct geometrical matching process comprising;
obtaining an image of the patient'"'"'s healthy knee,segmenting the knee into components, including a healthy meniscus, andcomparing the healthy meniscus to the available prosthetic devices to identify any geometrically suitable prosthetic devices;
a correlation parameters-based matching process comprising;
obtaining an image of the patient'"'"'s injured knee,determining one or more correlation parameters for the available prosthetic devices based on anatomical measurements of the injured knee, andcomparing the one or more correlation parameters for the available prosthetic devices to an accepted normative data range to identify any correlation-parameter suitable prosthetic devices; and
a finite element-based matching process comprising;
creating a finite element model of the patient'"'"'s injured knee based on the image of the patient'"'"'s injured knee,simulating a loading of the patient'"'"'s injured knee with an available prosthetic device positioned therein for one or more of the available prosthetic devices, andevaluating a load distribution for the one or more of the available prosthetic devices to identify any finite-element suitable prosthetic devices.
2 Assignments
0 Petitions
Accused Products
Abstract
Methods of selecting and implanting prosthetic devices for use as a replacement meniscus are disclosed. The selection methods include a pre-implantation selection method and a during-implantation selection method. The pre-implantation selection method includes a direct geometrical matching process, a correlation parameters-based matching process, and a finite element-based matching process. The implant identified by the pre-implantation selection method is then confirmed to be a suitable implant in the during-implantation selection method. Methods of implanting meniscus prosthetic devices are also disclosed.
169 Citations
24 Claims
-
1. A method of selecting a meniscus prosthetic device for a patient from a library of available prosthetic devices, the method comprising:
a pre-implantation matching process comprising; a direct geometrical matching process comprising; obtaining an image of the patient'"'"'s healthy knee, segmenting the knee into components, including a healthy meniscus, and comparing the healthy meniscus to the available prosthetic devices to identify any geometrically suitable prosthetic devices; a correlation parameters-based matching process comprising; obtaining an image of the patient'"'"'s injured knee, determining one or more correlation parameters for the available prosthetic devices based on anatomical measurements of the injured knee, and comparing the one or more correlation parameters for the available prosthetic devices to an accepted normative data range to identify any correlation-parameter suitable prosthetic devices; and a finite element-based matching process comprising; creating a finite element model of the patient'"'"'s injured knee based on the image of the patient'"'"'s injured knee, simulating a loading of the patient'"'"'s injured knee with an available prosthetic device positioned therein for one or more of the available prosthetic devices, and evaluating a load distribution for the one or more of the available prosthetic devices to identify any finite-element suitable prosthetic devices. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
-
16. A method of treating a damaged meniscus, comprising:
utilizing a pre-implantation matching process to identify a best suitable meniscus prosthetic device for replacing the damaged meniscus, the pre-implantation matching process comprising a correlation parameters-based matching process that considers an area correlation, a width correlation, a length correlation, and a perimeter correlation, the area correlation defined by a meniscus contact area divided by a medial tibia area, the width correlation defined by an average meniscus width divided by a medial tibia width, the length correlation defined by a medial meniscus length divided by a medial tibia length, and the perimeter correlation defined by a meniscus perimeter divided by a medial tibia perimeter. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23)
-
24. A surgical method, comprising:
-
performing an arthroscopy to create a medial portal; excising a majority of a damaged meniscus; excising a portion of a fat pad; enlarging the medial portal to a diameter between about 4.0 cm and about 6.0 cm; accessing a medial cavity; trialing one or more implant trials to identify a most suitable meniscus prosthesis; and implanting and securing the most suitable meniscus prosthesis into the medial cavity without penetrating bone.
-
Specification