Patient-specific knee alignment guide and associated method
AssigneeBiomet Manufacturing, LLC
InventorsRobert Metzger, Keith R. Berend, Michael E. Berend, Adolph V. Lombardi, Jr., Lance Dean Perry, Ryan John Schoenefeld
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Abstract
A method of preparing a knee joint for a prosthesis in a patient includes mating a patient-specific three-dimensional curved inner surface of a femoral alignment guide onto a corresponding three-dimensional femoral joint surface of the patient. The patient-specific three-dimensional curved inner surface is preoperatively configured from medical scans of the knee joint of the patient. First and second holes are drilled into an anterior portion of the femoral joint surface through corresponding first and second guiding apertures of the femoral alignment guide.
Claims16
A method of preparing a femur for a prosthesis in a patient, the method comprising:
- mating a patient-specific three-dimensional curved inner surface of a femoral alignment guide onto a corresponding three-dimensional surface of the femur of the patient, the patient-specific three-dimensional curved inner surface preoperatively configured from medical scans of the femur of the patient;
- drilling the femur using respective first and second guiding apertures of the femoral alignment guide;
- drilling a first hole and second hole in the femur using a second guide;
- placing a first pin in the first hole and a second pin in the second hole;
- coupling a first resection guide to the femur using the first pin and the second pin;
- performing a first resection of the femur with the aid of the first resection guide;
- placing a third pin and a fourth pin in the femur;
- coupling a second resection guide to the femur using the third pin and the fourth pin;
- and
- performing a second resection of the femur with the aid of the second resection guide.
A method of preparing a femur for a prosthesis in a patient, the method comprising:
- mating a patient-specific three-dimensional curved inner surface of a femoral alignment guide onto a corresponding three-dimensional surface of the femur of the patient, the patient-specific three-dimensional curved inner surface preoperatively configured from medical scans of the femur of the patient;
- positioning a drill guide having a body and first and second guiding bores with an alignment determined by the femoral alignment guide;
- drilling a first hole and a second hole in the femur with the aid of the drill guide;
- placing a first pin in the first hole and a second pin in the second hole;
- coupling a first resection guide to the femur using the first pin and the second pin;
- and
- performing a first resection of the femur with the aid of the first resection guide.
A method of preparing a femur for a prosthesis in a patient, the method comprising:
- mating a patient-specific three-dimensional curved inner surface of a femoral alignment guide onto a corresponding three-dimensional surface of the femur of the patient, the patient-specific three-dimensional curved inner surface preoperatively configured from medical scans of the femur-of the patient, wherein a portion of the femoral alignment guide around an anterior-medial portion of the femur;
- coupling a first resection guide to the femur using at least a first pin;
- and
- performing a first resection of the femur with the aid of the first resection guide.
Dependencies are inferred from the claim text.